Welcome to Air travel

The How Has 9 11 Affected Air Travel Page

Welcome to our site where we have collected recent news and resources for How Has 9 11 Affected Air Travel.

Latest How Has 9 11 Affected Air Travel News

BEN column — Rock Phillips remembered; Nana has her quota!; WCLL a health club?; on catching cats; - NJ.com

A 30 percent chance of showers and thunderstorms in the morning. High around 95. Clear over the weekend. When Dolores Sharkey was on Jonathan P. Casey’s show on WSNJ radio, Casey gave her a Petula Clark CD ...

Travel Briefs: Aug. 6 - Carroll County Online

WASHINGTON - More than 100 national parks that usually charge entrance fees will be offering free admission the weekend of Aug. 14-15. In addition, many national park concessionaires have special offers for ...

AP News in Brief - AP - msnbc.com

'Miracle' as Colombia jetliner crashes in thunderstorm: Woman dies, but 130 survive BOGOTA, Colombia (AP) — A Boeing 737 jetliner filled with vacationers crashed in a thunderstorm and broke apart as it slid onto the ...

Obama: Oil may have stopped flowing into Gulf, but government's job far from done in region - Newser

President Barack Obama, first lady Michelle Obama, partially visible second from right, and daughter Sasha, right, greet people at Tyndall Air Force Base in Panama City, Fla, Saturday, Aug. 14, 2010,... (Associated Press ...

Haiti's desperate needs, brought home - Philadelphia Daily News

One in an occasional series. All his professional life, Steve Moriconi, an oral surgeon with a private practice in Jenkintown, had wanted to do a medical mission, and the Haitian earthquake was the catalyst ...

With development in lull, Atlantic County municipalities get a chance to plan for more - Atlantic City Press

Vacant home sites lead to roads to nowhere that are paved in the Hunters Run development off of Wexford Lane in Egg Harbor Twp. The development has roads and curbs, but no houses.. Friday July, 30 2010 Life in ...

Green diary rescue & open thread - DAILY KOS

Nick Price and Logan Yonavjak at the World Resources Institute write that, for the first time, users can view the geographic extent of mountaintop removal operations in Appalachia. The hot-pink dots are ...

What Really Scares People: Top 10 Phobias - LiveScience.com

Not many people jump for joy at the thought of an intense session of plaque removal. And between 9 percent and 20 percent of Americans say they avoid going to the dentist because of anxiety or fear, according to WebMD ...

Editorial Roundup: Excerpts From Recent Editorials - Independent Record

Excerpts from recent editorials in newspapers in the United States and abroad: Aug. 1 The Daily Sentinel, Grand Junction, Colo., on a reprimand as punishment for New York Rep. Charles Rangel: New York ...

WAC Primer Day 3 - Twin Falls Times-News

1. Boise State 2009 Record: 14-0 (8-0 WAC) Starters Returning: 21 (offense - 11; defense - 10) Key Returnees: QB Kellen Moore (Jr.), RB Jeremy Avery (Sr.), WR Austin Pettis (Sr.), WR Titus Young (Sr.), S Jeron ...

Resolved Question: Physics. please look and answer- first good answers gets best answer!?

3. The period of the sound wave produced by a 440 Hertz tuning fork is ___________. 4. Many children are lined up at an ice cream stand. If the child at the back pushes the child in front of him, and she in turn pushes the child in front of her, and so on, will they create a transverse or longitudinal wave in the line? 5. In a foggy harbor, a tugboat sounds its foghorn. Bobbie stands on shore, 750 m away. The foghorn's sound wave completes 1100 cycles on its way to Bobbie. What is the wavelength of the sound wave? 7. A wave is traveling through a 35.0-meter-long cable strung with a tension of 35,000N. The mass of this length of cableis 10.2 kg. What is the speed of a wave that is traveling in the cable? 8. How long must a pendulum in your grandfather clock be in order to have a fequency of one cyle in 2 seconds? 9. What is the only thing that affects the period of a pendulum here on Earth? 10. You are lost in the wilderness, carrying only a piece of aluminum foil. Thanks to diligent study in your biology class, you remember which mushrooms are poisonous, and you are able to pick others that won't kill you. Your talents in basket weaving also pay off magnificently, as you create a basket and devise a plan to line it with aluminum foil, making a solar cooker. Mmmm, roast mushrooms! The basket is a section of a sphere with radius 21.0 cm. How far from the bottom of the basket should you place the mushrooms to cook them most efficiently using the Sun's rays? Is the sphere shaped basket the best? 11. A mirror creates an image of magnification -1/3. (a) Is the image upright or inverted? (b) If the object is 7.80 cm tall, what is the height of the image? 12. A mirror produces an inverted image 2.80 cm tall when a 5.60 cm tall object is 25.0 cm away from it. (a) What is the image distance? State your answer with the correct sign. (b) What is the focal length of the mirror? State your answer with the correct sign. 13 Light of wavelength X travels more slowly in glass than light of wavelength Y. (a) Which light refracts (bends) more as it travels from air to glass? 14. As light travels between media with different indices of refraction, which of the following wave properties changes: speed, frequency, wavelength? 15. A beam of light travels from a medium with an index of refraction of 1.25 to a medium with an index of refraction of 1.46. If the incoming beam makes an angle of 14.0° with the normal, at what angle from the normal will it refract? Bonus: A beam of light travels through 4 mediums on its journey to an diamond on the bottom of a fish tank. The wave has an original angle of 32* from the normal as it crosses the first interface. What is the angle coming out the last interface? Air n=1, glass n=1.51, water n=1.33, diamond n=2.42 more

Resolved Question: Physics questions. Please HELP?!?

8. How long must a pendulum in your grandfather clock be in order to have a fequency of one cyle in 2 seconds? 9. What is the only thing that affects the period of a pendulum here on Earth? 10. You are lost in the wilderness, carrying only a piece of aluminum foil. Thanks to diligent study in your biology class, you remember which mushrooms are poisonous, and you are able to pick others that won't kill you. Your talents in basket weaving also pay off magnificently, as you create a basket and devise a plan to line it with aluminum foil, making a solar cooker. Mmmm, roast mushrooms! The basket is a section of a sphere with radius 21.0 cm. How far from the bottom of the basket should you place the mushrooms to cook them most efficiently using the Sun's rays? Is the sphere shaped basket the best? 11. A mirror creates an image of magnification -1/3. (a) Is the image upright or inverted? (b) If the object is 7.80 cm tall, what is the height of the image? 12. A mirror produces an inverted image 2.80 cm tall when a 5.60 cm tall object is 25.0 cm away from it. (a) What is the image distance? State your answer with the correct sign. (b) What is the focal length of the mirror? State your answer with the correct sign. 13 Light of wavelength X travels more slowly in glass than light of wavelength Y. (a) Which light refracts (bends) more as it travels from air to glass? 14. As light travels between media with different indices of refraction, which of the following wave properties changes: speed, frequency, wavelength? 15. A beam of light travels from a medium with an index of refraction of 1.25 to a medium with an index of refraction of 1.46. If the incoming beam makes an angle of 14.0° with the normal, at what angle from the normal will it refract? more

Resolved Question: I need physical science help, Can someone please help me?

1. Which type of mechanical wave needs a source of energy to produce it? (1 point) a transverse wave a longitudinal wave a surface wave all of the above 2. In an earthquake, a P wave is a longitudinal wave. It moves through soil and rock as a _____. (1 point) wavy line series of faults series of compressions and rarefactions series of crests and troughs 4. How does reflection differ from refraction and diffraction? (1 point) Reflection is the only process in which the wave does not continue moving forward. Reflection is the only process that involves a change in the wave. Reflection affects all types of mechanical waves, but refraction and diffraction do not. Reflection is the only process that changes the direction of a wave. 5. What is one property of a wave that determines how much it will diffract when it encounters an obstacle? (1 point) speed amplitude polarization wavelength 6. Which wave will probably be diffracted the most by an obstacle? (1 point) a longitudinal wave the wave with the highest amplitude the wave with the longest wavelength the wave that strikes a solid barrier with the slowest speed 7. The formation of a standing wave requires _____. (1 point) the traveling of a wave for a long distance constructive interference between two waves of slightly different frequencies that refraction and diffraction occur at the same time in a wave interference between incoming and reflected waves 8. In which medium does sound travel the fastest? (1 point) salt water fresh water air cast iron 9. Sonar equipment sends sound waves into deep water and measures _____. (1 point) refraction of the transmitted wave only the direction of the reflected wave the time delay of the returning echoes interference of the transmitted and reflected waves 10. An ambulance siren sounds different as it approaches you than when it moves away from you. What scientific term would you use to explain how this happens? (1 point) ultrasound diffraction rarefaction the Doppler effect 11. The part of the ear that sends coded nerve signals to the brain is _____. (1 point) the outer ear the inner ear the middle ear the eardrum 12. In a transverse wave, _____ is measured from crest to crest or from trough to trough. (1 point) amplitude frequency wavelength periodic motion 13. If a wave has a wavelength of 6 m and a frequency of 2 hertz, its speed is _____. (1 point) 3 m/s 0.33 m/s 1 m/s 12 m/s 15. When you shake the end of a rope to make a wave, how can you increase the amplitude of the wave? (2 points) 16. What sounds can damage hearing? (2 points) 18. In a large cave, you can hear an echo a few seconds after you speak. Explain how this happens in terms of wave properties. (3 points) more

Resolved Question: i need some help with science?

1. Which type of mechanical wave needs a source of energy to produce it? (1 point) a transverse wave a longitudinal wave a surface wave all of the above 2. In an earthquake, a P wave is a longitudinal wave. It moves through soil and rock as a _____. (1 point) wavy line series of faults series of compressions and rarefactions series of crests and troughs 3. Figure 17-1 shows a wave movement during 1 second. What is the frequency of this wave? (1 point) 2 hertz 2 meters/second 0.5 second 1 hertz 4. How does reflection differ from refraction and diffraction? (1 point) Reflection is the only process in which the wave does not continue moving forward. Reflection is the only process that involves a change in the wave. Reflection affects all types of mechanical waves, but refraction and diffraction do not. Reflection is the only process that changes the direction of a wave. 5. What is one property of a wave that determines how much it will diffract when it encounters an obstacle? (1 point) speed amplitude polarization wavelength 6. Which wave will probably be diffracted the most by an obstacle? (1 point) a longitudinal wave the wave with the highest amplitude the wave with the longest wavelength the wave that strikes a solid barrier with the slowest speed 7. The formation of a standing wave requires _____. (1 point) the traveling of a wave for a long distance constructive interference between two waves of slightly different frequencies that refraction and diffraction occur at the same time in a wave interference between incoming and reflected waves 8. In which medium does sound travel the fastest? (1 point) salt water fresh water air cast iron 9. Sonar equipment sends sound waves into deep water and measures _____. (1 point) refraction of the transmitted wave only the direction of the reflected wave the time delay of the returning echoes interference of the transmitted and reflected waves 10. An ambulance siren sounds different as it approaches you than when it moves away from you. What scientific term would you use to explain how this happens? (1 point) ultrasound diffraction rarefaction the Doppler effect 11. The part of the ear that sends coded nerve signals to the brain is _____. (1 point) the outer ear the inner ear the middle ear the eardrum 12. In a transverse wave, _____ is measured from crest to crest or from trough to trough. (1 point) amplitude frequency wavelength periodic motion 13. If a wave has a wavelength of 6 m and a frequency of 2 hertz, its speed is _____. (1 point) 3 m/s 0.33 m/s 1 m/s 12 m/s 14. What kind of wave does A in Figure 17-2 represent? (1 point) longitudinal wave transverse wave mechanical wave surface wave more

Resolved Question: Moisture, Clouds, and Precipitation questions!?

Hello, I have 21 questions that are not very hard to be answered. Thank you very much for your help! 1. What is the general term of water vapor in air? A. capacity B. condensation C. humidity D. saturation 2. During which process does water vapor change to the liquid state? A. condensation B. deposition C. melting D.sublimation 3. The ratio of air's actual water-vapor content to the amount of water needed for saturation is the A. adiabatic rate B. dew point C. relative humidity D. water capacity 4. What are visible mixtures of tiny water droplets or ice crystals suspended in air? A. clouds B.dew C. hail D. sleet 5. Air that has a 100% relative humidity is said to be A. dry B. saturated C. stable D. unstable 6. Which of the following clods are high, white, and thin? A. cirrus B. cumulus C. nimbostratus D. stratus 7. Which of the following words means "rainy cloud"? A. cirrus B. cumulus C. nimbostatus D. stratus 8. Which of the following substances changes feom one state of matter to another at temperatures and pressures experienced at Eaths's surface? A. carbon dioxide B. nitrogen C. oxygen D. water 9.Which of the following forms when supercooled raindrops freeze on contact with solid objects near earth's surface? A. glaze B. hail C. sleet D. snow 10.What happens when unstable air is forced to rise? 11. Describe the conditions that might cause convergence. 12. As you drink an ice-cold beverage on a hot day, the outside of the glass becomes wet. Explain why this happens. 13. What is the difference between condensation and precipitation? 14. Why does air cool when it rises through the atmosphere? What is this type of cooling known as? 15. Write a general statement relation air temperature and the amount of water vapor needed to saturate the air 16. Describe the difference between clouds and water vapor. 17. List two changes of state for water that cause latent heat to be released. 18. What is the physical property of thermals that helps bird of prey? Descibe how these help birds. 19. Explain how urban areas contribute to localized convective lifting. 20. Describe how atmospheric stability affects dailt weather. Include examples 21. In general, when traveling in foggy conditions, what types of topography should you be most cautious of? more

Resolved Question: Help with science please?

1. Acceleration involves a change in ____. (1 point) time direction speed both b and c 2. On a speed-time graph, a horizontal line shows the change in speed is ____. (1 point) -10 10 1 0 3. Momentum is a measure of ____. (1 point) how hard it is to stop an object the amount of matter in an object the tendency of an object to change its motion the amount of force acting on an object 4. If gravity did not affect the path of a horizontally thrown ball, the ball would ____. (1 point) go straight up travel horizontally fall straight down follow a curved path 5. The upward force on an object falling through the air is ____. (1 point) air resistance inertia gravity terminal velocity 6. A 300-N force acts on a 25-kg object. The acceleration of the object is ____. (1 point) 7,500 m/s² 300 m/s² 25 m/s² 12 m/s² 7. The statement "for every action, there is an equal but opposite reaction" is a statement of ____. (1 point) the law of conservation of momentum Newton's first law Newton's second law Newton's third law 8. A fixed, single pulley that is used to lift a block does which one of the following? (1 point) doubles the force required to lift the block decreases the force required to lift the block makes the block easier to lift by changing the direction of the force needed to lift it decreases the force required and changes the direction of the force required 9. The work output of a machine divided by the work input is the ____ of the machine. (1 point) efficiency effort power resistance 10. A machine that changes only the direction of a force has a mechanical advantage of ____. (1 point) 1 2 10 100 11. When force is ______ to the direction of motion, no work is done. (1 point) 12. A heat engine ____. (1 point) changes mechanical energy to thermal energy changes mechanical energy into electrical energy changes thermal energy into mechanical energy changes kinetic energy into thermal energy 13. Most materials ____ when they are heated. (1 point) condense freeze expand contract 14. Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by ____. (1 point) condensation conduction convection radiation 15. The thermal energy of an object is ____. (1 point) its potential energy its average kinetic energy its potential energy minus its kinetic energy its kinetic energy plus its potential energy 16. You are in a car going 70 km/h and another car passes you going in the opposite direction at 70 km/h. Do both cars have the same velocity? Explain. (3 points) 17. What is the difference between distance and displacement? (3 points) 18. You push on a crate with a force of 10 N to the right, and your friend pushes on the crate with a force of 25 N to the left. Describe and explain the motion of the crate. (3 points) 19. Two objects that have the same weight are dropped from a tall building. One object is larger and flatter than the other. Explain why the larger object hits the ground last. (3 points) 20. Explain how your teeth work as a wedge. (3 points) 21. An inventor claims to have built a machine that can produce 120 J of work with an input of 110 J. Would you believe the inventor's claim? Why or why not? (3 points) 22. A comfortable summer day is 77°F. What is this on the Celsius scale? (5 points) 23. Explain how heat is transferred between a hot and a cold object by conduction. (3 points) {1} OK {1} ##LOC[OK]## ##LOC[Cancel]## {1} Yes No more

Resolved Question: physical science help please?

Which of these affects the pitch of a sound? A. loudness of the sound B. frequency of the waves C. intensity of the waves D. resonance 4. The intensity of a sound wave depends on A. the wave’s loudness. B. the wave’s amplitude. C. pitch. D. frequency. 5. Sonar and ultrasound technology depend on the ability of waves to A. reflect sound. B. amplify sound. C. disperse sound. D. dissipate sound. 6. Which type of electromagnetic waves has the highest energy? A. gamma rays B. ultraviolet light C. infrared D. microwaves 7. Which type of electromagnetic radiation is used to kill cancer cells? A. microwaves B. gamma rays C. ultraviolet rays D. sunlight 8. Radar works by sending a signal out from an air-traffic control tower that is A. analyzed by a Doppler scanner on the ground. B. reflected off a plane back to the control tower. C. increased in intensity as it passes through the atmosphere. D. scanned and analyzed by a receiver on board an airplane. 9. As the frequency of light waves increases, A. the energy increases. B. the energy decreases. C. the energy stays the same. D. the wavelength increases. 10. The particle model of light explains how light can A. travel through empty space without a medium. B. refract when it passes through a lens. C. be reflected off a mirror. D. diffract when it passes through a normal opening. 11. The amount of energy in a photon of light is proportional to the A. medium through which it travels. B. shape of the light wave it creates. C. speed of the corresponding light wave. D. frequency of the corresponding light wave. 12. Which of the following uses radio waves to find an object’s location? A. sonar B. ultrasound C. sonogram D. radar more

Resolved Question: Ill love you forever? Please help. If i don't pass this test ill fail science.?

Voting Question: Who is REALLY good at physics? LOTS of help needed. PLEASE?

There are ALOT of questions so I undersand if you do not want to answer these. BUT I NEED TO GET THESE QUESTIONS ANSWERED! Even if you can answer just 1, that would be great! Thank you :) MY GRADE LITERALLY DEPENDS OF THIS passing or fail. please please help. 1. What tyoe of movement would make an object projectile? 2. What are the two components of a projectile and their features (characteristics)? How do they affect each other? 3. Is a satellite a projectile? Why? 4. Two identical balls are thrown at the same time. One is thrown horizontally and the other is dropped from the same height. Which will his the ground first? 5. An object is thrown into the air at an angle, what is the velocity of the object at the very top of the ball's path (be sure to answer using horizontal and vertical velocities.) What is the acceleration? 6. What is the resultant of a 5-unit vector and 4-unit vector at the right angles to each other? 7. A ball is thrown straight up. If the launch speed is 15 m/s, at what speed will the ball return to the thrower's hand? (neglect air resistance) Explain your answer. 8. How long will it take a ball to reach the ground if it falls from a cliff 25 m high? 9. A boat moves across a river at 6 km/h. At the same time there is a current flowing at a right angle to the boat at 2 km/h. What is the resulting speed of the boat? How far will it have traveled in 5 hours? 10. Nellie Newton drops her shoe out of a helicopter traveling 80m/s. The shoe falls to the ground 6 seconds later. What is the horizontal distance of the shoe traveled while falling? 11. Harry is 30m from the ground. He wants to jump from his balcony into the pool below which is 18 m horizontally from the edge of the buliding. At what speed must he jump to reach the pool? 12. An arrow is shot horizontally from the top of a cliff. Neglecting air drag, what vertical distance has the arrow fallen 5 seconds later. 13. A rock is thrown horizontally from the top of a cliff with and inital velocity of 15 m/s. Neglecting air drag, where will the rock land 2 seconds later. more

Resolved Question: 8th grade science! need help! pleaseeeeeee?!?

1. Acceleration involves a change in ____. (1 point) * time * direction * speed * both b and c 2. On a speed-time graph, a horizontal line shows the change in speed is ____. (1 point) * -10 * 10 * 1 * 0 3. Momentum is a measure of ____. (1 point) * how hard it is to stop an object * the amount of matter in an object * the tendency of an object to change its motion * the amount of force acting on an object 4. If gravity did not affect the path of a horizontally thrown ball, the ball would ____. (1 point) * go straight up * travel horizontally * fall straight down * follow a curved path 5. The upward force on an object falling through the air is ____. (1 point) * air resistance * inertia * gravity * terminal velocity 6. A 300-N force acts on a 25-kg object. The acceleration of the object is ____. (1 point) * 7,500 m/s² * 300 m/s² * 25 m/s² * 12 m/s² 7. The statement "for every action, there is an equal but opposite reaction" is a statement of ____. (1 point) * the law of conservation of momentum * Newton's first law * Newton's second law * Newton's third law 8. A fixed, single pulley that is used to lift a block does which one of the following? (1 point) * doubles the force required to lift the block * decreases the force required to lift the block * makes the block easier to lift by changing the direction of the force needed to lift it * decreases the force required and changes the direction of the force required 9. The work output of a machine divided by the work input is the ____ of the machine. (1 point) * efficiency * effort * power * resistance 10. A machine that changes only the direction of a force has a mechanical advantage of ____. (1 point) * 1 * 2 * 10 * 100 11. When force is ______ to the direction of motion, no work is done. (1 point) 12. A heat engine ____. (1 point) * changes mechanical energy to thermal energy * changes mechanical energy into electrical energy * changes thermal energy into mechanical energy * changes kinetic energy into thermal energy 13. Most materials ____ when they are heated. (1 point) * condense * freeze * expand * contract 14. Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by ____. (1 point) * condensation * conduction * convection * radiation 15. The thermal energy of an object is ____. (1 point) * its potential energy * its average kinetic energy * its potential energy minus its kinetic energy * its kinetic energy plus its potential energy 16. You are in a car going 70 km/h and another car passes you going in the opposite direction at 70 km/h. Do both cars have the same velocity? Explain. (3 points) 17. What is the difference between distance and displacement? (3 points) 18. You push on a crate with a force of 10 N to the right, and your friend pushes on the crate with a force of 25 N to the left. Describe and explain the motion of the crate. (3 points) 19. Two objects that have the same weight are dropped from a tall building. One object is larger and flatter than the other. Explain why the larger object hits the ground last. (3 points) 20. Explain how your teeth work as a wedge. (3 points) 21. An inventor claims to have built a machine that can produce 120 J of work with an input of 110 J. Would you believe the inventor's claim? Why or why not? (3 points) 22. A comfortable summer day is 77°F. What is this on the Celsius scale? (5 points) 23. Explain how heat is transferred between a hot and a cold object by conduction. (3 points) more

Resolved Question: Need help in science its worth alot of points!!!! help PLEASE!!!?

Resolved Question: Please HELP I WILL GIVE YOU 20 POINTS?

1. What is energy? (Points: 3) the ability to do work force × distance chemical change force 2. Which type of energy is stored in chemical compounds and released in chemical reactions? (Points: 3) chemical energy electrical energy kinetic energy potential energy 3. __________ energy is the energy of motion. (Points: 3) Stored Static Potential Kinetic 4. A ball falling through the air has___________. (Points: 3) only potential energy only kinetic energy both potential energy because it still has a distance to move before it hits the ground and kinetic energy because it is moving both kinetic energy because it still has a distance to move before it hits the ground and potential energy because it is moving 5. When car stops, the brakes heat up because of friction. What is this an example of? (Points: 3) periodic motion one form of energy being converted to another elastic motion energy being destroyed 6. Stored energy is __________ energy. (Points: 3) chemical potential kinetic mechanical 7. The water held back by a dam is an example of which type of energy? (Points: 3) mechanical energy potential energy kinetic energy chemical energy 8. A swinging pendulum demonstrates which type of energy? (Points: 3) both potential and kinetic energy chemical energy only potential energy only kinetic energy 9. How can you increase the period of a pendulum? (Points: 3) by taking away mass by making the string longer by adding mass by making the string shorter 10. In the Elasticity lab, what did you change and why? (Points: 3) temperature to see how it affected stretch length of a rubber band mass to see how it affected stretch length of a rubber band mass to see if you could break a rubber band rubber band length to see how it affected mass 11. The force needed to stretch an elastic object __________. (Points: 3) remains the same as you stretch it decreases to stretch it farther increases to stretch it farther 12. According to the kinetic theory, what happens when ice melts? (Points: 3) The water molecules decrease their speed. The water molecules increase their speed. The water molecules do not change speed. 13. Which statement about temperature is correct? (Points: 3) Temperature is the same thing as heat. Temperature is the same thing as energy. Temperature is an indirect measurement of the heat energy in a substance. 14. Conduction is the movement of heat because of the collision of __________. (Points: 3) atoms molecules compounds photons 15. How do liquids and gases transfer heat? (Points: 3) by radiation by air movement by conduction by convection 16. Which of the following does not need to travel through a solid, a liquid, or a gas? (Points: 3) radiation conduction convection 17. In the Heat Transfer lab, you placed blocks of ice on different materials and __________. (Points: 3) observed melting times to see which materials made good insulators recorded how different materials responded to getting wet recorded the amount of water that melted from each piece of ice observed what happened when different materials got cold 18. What does a thermos do? (Points: 3) A thermos makes things cooler. A thermos makes things warmer. A thermos slows heat transfer. A thermos stops heat transfer. 19. In the Design a Thermos lab, you compared the temperature of your thermos with a container that you did not insulate. What was that container for? (Points: 3) That container kept the thermos from overheating. That container was the independent variable. That container was a control—a basis for comparison. That container was a backup container. 20. Why would aluminum foil be useful in a thermos design? (Points: 3) Aluminum foil reflects radiant heat. Aluminum foil is a good insulator. Aluminum foil is a good conductor. more

Resolved Question: Someone smart answer these...If you can't answer all of them' just answer the ones you know.?

I'm 15 and a sophomore in highschool. My family consists of an illiterate grandpa, and no one in my family graduated highschool. So there is a lot of stress on me. And ever since I was little I had these strange questions that no one understood. My family thinks I'm full of it and I just make this stuff up as I go. I asked my Grandma qustion 1 and she said that I shold stop looking for the answer to everything and just live my life. Then she read the bible to me and told me that god didn't intend for us to know everything and a lot of other stuff. Yes I'm religous, But I'm not ignoring evolution. I mean god made the world but we have evolved apperantly. Maybe not rom monkeys I believe but there is a difference between us and cavemen. But this isn't about that, this is about answering my questions. Everyone I ask these questions to thinks I'm a little nuts. I mean come on, why would a 15 year old be contimplating the universe? I not lying, I want to just know things. I don't think that makes me a bad purson. My grades are A's in math and science, Cs in everything else because they are so easy and boring, and a D in PE. My familys mad because they say thats the only class they passed, yet I failed it? 1.I know that when you look at something your brain reverses the image so it appears normal to you, Well if so, does it do the same for the sense of touch? 2.what is the chemical breakdown of would? 3.What is air? If particles, then do there fields fill the space, or are there voids between them? . 4.How do we know that everyone see's the same thing. For example, I could see a purple elephant and you could see a gray one, but from what we were taught we could say that we both saw gray. And there is no way of knowing. 5.If we were to travel to pluto faster than the speed of light...I know it's impossible...would we be traveling towards Pluto's future and the earths past? 6.Am I the only one that When I look at an object I think of Pulsating atoms and how they interact with each other, and how gravity is pulling them towards the earth, and how at that moment there absorbing light and reflecting color, and how there electric fields affect each other? No seriously, I can sit on my bed and get vivid images on what it would look like if we could examine everything through the eyes of a microscope. Kind of like the matrix, but it's not real. 7.What are the components of a cell made of? Not the structure Of a cell, but what is the chemical breakdown of something like the golgi complex. 8.What is an electron made of? Does an electrons magnetic field affect the laws of relativity? Does it have it's own law? Is it a force like gravity? If it is a force, can you explain it to me? 9.What holds the presynapse from foating away from thesynaptic cleft in the nervous system? 10.What is einsteins actual equation for relativity. 11.What is consiousness? Is it our brain or something else? How does everyone have there own opinian and thought process, there own pursonalities and such? I mean, everyone is made of cells right. and everyone has slightly varied DNA. Can the way your cells are rearanged realy affect the way you think? Or is it something else? 12.In evolution everything came from something right? well were did the first elements come from? And if there is an answer to that, where did that come from? and so on. It's a never ending question. more

Resolved Question: 1. Which of the following actions increases the volume of your lungs, allowing more gases to be exchanged?

1.Which of the following actions increases the volume of your lungs, allowing more gases to be exchanged? A.The diaphragm flattens and moves downward. B.The rib cage becomes smaller. C.Air pressure increases inside the lungs. D.Gases move from areas of lower pressure. 2.The blood in veins is A.leaving the lungs. B.moving in single file. C.carrying oxygen. D.traveling to the heart. 3.Blood is carried to and from the cells of the body by the A.arteries. B.capillaries. C.muscles. D.veins. 4.Oxygen inhaled into the alveoli diffuses into the A.capillaries. B.arteries. C.adjacent alveoli. D.bronchioles. 5.The nervous system regulates breathing and the exchange of gases in the lungs by A.overriding signals during exercise. B.monitoring dissolved gases in the blood. C.maintaining a constant rate of inhalation. D.constricting the blood vessels in the lungs. 6.How does asthma affect the exchange of gases in the lungs? A.It causes the bronchioles to constrict reducing the amount of gases allowed into or out of the lungs. B.It destroys alveoli over time reducing the amount of surface area for gases to be exchanged. C.It makes the lungs produce mucus blocking the surface area for gases to be exchanged. D.It relaxes the diaphragm too much reducing the amount of gases allowed into or out of the lungs. 7.Why does CO2 diffuse from the blood into the alveoli? A.CO2 concentration is higher in the blood than in the alveoli. B.The brain signals the alveoli to absorb CO2 . C.When O2 leaves the blood, another gas must replace it. D.There is not enough hemoglobin to carry the CO2. 8.Where does the first contraction of the heartbeat take place? A.In the ventricles B.In the atria C.In the valves D.In the septum 9.The AV node signals the heart's ventricles to contract, pumping oxygen-poor blood from the right ventricle into the A.aorta. B.pulmonary vein. C.pulmonary artery. D.atria. 10.Which parts of the circulatory system delivers oxygen-rich blood to the rest of the body? A.The left ventrical and the pulmonary vein B.The left atrium and the capillaries C.The atria and the pulmonary artery D.The left ventrical and the aorta 11.Which of these structures of the lymphatic system helps to develop lymphocytes? A.The tonsils B.The thymus C.The lymph nodes D.The lymph vessels 12.How do lymphocytes help the body? A.They produce clotting factors. B.They filter and clean the lymph. C.They destroy foreign organisms. D.They reduce swelling in the nodes. 13.Lymph nodes filter lymph and trap: A.Fungi B.Viruses C.Bacteria D.All of the above 14.Circulation is maintained in the veins by the A.activity of skeletal muscles. B.use of two-way valves. C.contraction of elastic fibers. D.prevention of clotting. 15.Materials can diffuse into and out of blood in the capillaries because the capillary A.beds are near the heart. B.fibers are very elastic. C.walls are very thin. D.muscles act as pumps. 16.The diastolic pressure occurs when the A.left ventricle relaxes. B.right ventricle contracts. C.blood rushes into an artery. D.systolic pressure is too high. 17.Permanently high blood pressure is called A.stroke. B.atherosclerosis. C.hypertension. D.arteriosclerosis. 18.A clear, pale-yellow fluid that makes up more than half of the blood is known as A.plasma. B.platelets. C.white blood cells. D.red blood cells. 19.The part of blood that carries oxygen and carbon dioxide to the rest of the body is the A.plasma. B.platelets. C.white blood cell. D.red blood cell. 20.If you do not have the Rh protein marker on your red blood cells, you would be said to be? A.Rh negative B.Rh positive C.Type O D.Type AB 21.If you have neither the A nor the B protein marker in your blood, your blood is likely to be Type A.A. B.B. C.AB. D.O. 22.To help seal a wound, platelets release proteins called A.surface protein markers. B.Rh factors. C.immune proteins. D.clotting factors. 23.The major function of the lymphatic system is to A.transport blood from nodes to organs. B.conduct messages from sensors to the brain. C.return fluid to the capillaries. D.collect excess fluid from between the cells. 24.How are veins and lymph vessels similar? A.Both rely on one-way valves to avoid backflow. B.Both use a pump to keep up pressure. C.Both have elastic fibers to move fluid. D.Both leak fluid from their capillaries. 25.The lymphatic system empties lymph back into the circulatory system A.by way of valves. B.at lymph nodes. C.through two veins. D.between cells. more

Voting Question: I need help with biology plzzzzz?

Which of the following actions increases the volume of your lungs, allowing more gases to be exchanged? A. The diaphragm flattens and moves downward. B. The rib cage becomes smaller. C. Air pressure increases inside the lungs. D. Gases move from areas of lower pressure. 2. The blood in veins is A. leaving the lungs. B. moving in single file. C. carrying oxygen. D. traveling to the heart. 3. Blood is carried to and from the cells of the body by the A. arteries. B. capillaries. C. muscles. D. veins. 4. Oxygen inhaled into the alveoli diffuses into the A. capillaries. B. arteries. C. adjacent alveoli. D. bronchioles. 5. The nervous system regulates breathing and the exchange of gases in the lungs by A. overriding signals during exercise. B. monitoring dissolved gases in the blood. C. maintaining a constant rate of inhalation. D. constricting the blood vessels in the lungs. 6. How does asthma affect the exchange of gases in the lungs? A. It causes the bronchioles to constrict reducing the amount of gases allowed into or out of the lungs. B. It destroys alveoli over time reducing the amount of surface area for gases to be exchanged. C. It makes the lungs produce mucus blocking the surface area for gases to be exchanged. D. It relaxes the diaphragm too much reducing the amount of gases allowed into or out of the lungs. 7. Why does CO2 diffuse from the blood into the alveoli? A. CO2 concentration is higher in the blood than in the alveoli. B. The brain signals the alveoli to absorb CO2 . C. When O2 leaves the blood, another gas must replace it. D. There is not enough hemoglobin to carry the CO2. 8. Where does the first contraction of the heartbeat take place? A. In the ventricles B. In the atria C. In the valves D. In the septum 9. The AV node signals the heart's ventricles to contract, pumping oxygen-poor blood from the right ventricle into the A. aorta. B. pulmonary vein. C. pulmonary artery. D. atria. 10. Which parts of the circulatory system delivers oxygen-rich blood to the rest of the body? A. The left ventrical and the pulmonary vein B. The left atrium and the capillaries C. The atria and the pulmonary artery D. The left ventrical and the aorta 11. Which of these structures of the lymphatic system helps to develop lymphocytes? A. The tonsils B. The thymus C. The lymph nodes D. The lymph vessels 12. How do lymphocytes help the body? A. They produce clotting factors. B. They filter and clean the lymph. C. They destroy foreign organisms. D. They reduce swelling in the nodes. 13. Lymph nodes filter lymph and trap: A. Fungi B. Viruses C. Bacteria D. All of the above 14. Circulation is maintained in the veins by the A. activity of skeletal muscles. B. use of two-way valves. C. contraction of elastic fibers. D. prevention of clotting. 15. Materials can diffuse into and out of blood in the capillaries because the capillary A. beds are near the heart. B. fibers are very elastic. C. walls are very thin. D. muscles act as pumps. 16. The diastolic pressure occurs when the A. left ventricle relaxes. B. right ventricle contracts. C. blood rushes into an artery. D. systolic pressure is too high. 17. Permanently high blood pressure is called A. stroke. B. atherosclerosis. C. hypertension. D. arteriosclerosis. 18. A clear, pale-yellow fluid that makes up more than half of the blood is known as A. plasma. B. platelets. C. white blood cells. D. red blood cells. 19. The part of blood that carries oxygen and carbon dioxide to the rest of the body is the A. plasma. B. platelets. C. white blood cell. D. red blood cell. 20. If you do not have the Rh protein marker on your red blood cells, you would be said to be? A. Rh negative B. Rh positive C. Type O D. Type AB 21. If you have neither the A nor the B protein marker in your blood, your blood is likely to be Type A. A. B. B. C. AB. D. O. 22. To help seal a wound, platelets release proteins called A. surface protein markers. B. Rh factors. C. immune proteins. D. clotting factors. 23. The major function of the lymphatic system is to A. transport blood from nodes to organs. B. conduct messages from sensors to the brain. C. return fluid to the capillaries. D. collect excess fluid from between the cells. 24. How are veins and lymph vessels similar? A. Both rely on one-way valves to avoid backflow. B. Both use a pump to keep up pressure. C. Both have elastic fibers to move fluid. D. Both leak fluid from their capillaries. 25. The lymphatic system empties lymph back into the circulatory system A. by way of valves. B. at lymph nodes. more

Resolved Question: Biology Help Please, Which of the following actions increases the volume of your lungs........?

1. Which of the following actions increases the volume of your lungs, allowing more gases to be exchanged? A. The diaphragm flattens and moves downward. B. The rib cage becomes smaller. C. Air pressure increases inside the lungs. D. Gases move from areas of lower pressure. 2. The blood in veins is A. leaving the lungs. B. moving in single file. C. carrying oxygen. D. traveling to the heart. 3. Blood is carried to and from the cells of the body by the A. arteries. B. capillaries. C. muscles. D. veins. 4. Oxygen inhaled into the alveoli diffuses into the A. capillaries. B. arteries. C. adjacent alveoli. D. bronchioles. 5. The nervous system regulates breathing and the exchange of gases in the lungs by A. overriding signals during exercise. B. monitoring dissolved gases in the blood. C. maintaining a constant rate of inhalation. D. constricting the blood vessels in the lungs. 6. How does asthma affect the exchange of gases in the lungs? A. It causes the bronchioles to constrict reducing the amount of gases allowed into or out of the lungs. B. It destroys alveoli over time reducing the amount of surface area for gases to be exchanged. C. It makes the lungs produce mucus blocking the surface area for gases to be exchanged. D. It relaxes the diaphragm too much reducing the amount of gases allowed into or out of the lungs. 7. Why does CO2 diffuse from the blood into the alveoli? A. CO2 concentration is higher in the blood than in the alveoli. B. The brain signals the alveoli to absorb CO2 . C. When O2 leaves the blood, another gas must replace it. D. There is not enough hemoglobin to carry the CO2. 8. Where does the first contraction of the heartbeat take place? A. In the ventricles B. In the atria C. In the valves D. In the septum 9. The AV node signals the heart's ventricles to contract, pumping oxygen-poor blood from the right ventricle into the A. aorta. B. pulmonary vein. C. pulmonary artery. D. atria. 10. Which parts of the circulatory system delivers oxygen-rich blood to the rest of the body? A. The left ventrical and the pulmonary vein B. The left atrium and the capillaries C. The atria and the pulmonary artery D. The left ventrical and the aorta 11. Which of these structures of the lymphatic system helps to develop lymphocytes? A. The tonsils B. The thymus C. The lymph nodes D. The lymph vessels 12. How do lymphocytes help the body? A. They produce clotting factors. B. They filter and clean the lymph. C. They destroy foreign organisms. D. They reduce swelling in the nodes. 13. Lymph nodes filter lymph and trap: A. Fungi B. Viruses C. Bacteria D. All of the above 14. Circulation is maintained in the veins by the A. activity of skeletal muscles. B. use of two-way valves. C. contraction of elastic fibers. D. prevention of clotting. 15. Materials can diffuse into and out of blood in the capillaries because the capillary A. beds are near the heart. B. fibers are very elastic. C. walls are very thin. D. muscles act as pumps. 16. The diastolic pressure occurs when the A. left ventricle relaxes. B. right ventricle contracts. C. blood rushes into an artery. D. systolic pressure is too high. 17. Permanently high blood pressure is called A. stroke. B. atherosclerosis. C. hypertension. D. arteriosclerosis. 18. A clear, pale-yellow fluid that makes up more than half of the blood is known as A. plasma. B. platelets. C. white blood cells. D. red blood cells. 19. The part of blood that carries oxygen and carbon dioxide to the rest of the body is the A. plasma. B. platelets. C. white blood cell. D. red blood cell. 20. If you do not have the Rh protein marker on your red blood cells, you would be said to be? A. Rh negative B. Rh positive C. Type O D. Type AB 21. If you have neither the A nor the B protein marker in your blood, your blood is likely to be Type A. A. B. B. C. AB. D. O. 22. To help seal a wound, platelets release proteins called A. surface protein markers. B. Rh factors. C. immune proteins. D. clotting factors. 23. The major function of the lymphatic system is to A. transport blood from nodes to organs. B. conduct messages from sensors to the brain. C. return fluid to the capillaries. D. collect excess fluid from between the cells. 24. How are veins and lymph vessels similar? A. Both rely on one-way valves to avoid backflow. B. Both use a pump to keep up pressure. C. Both have elastic fibers to move fluid. D. Both leak fluid from their capillaries. 25. The lymphatic system empties lymph back into the circulatory system A. by way of valves. B. at lymph node more

Resolved Question: 15 quiz Earth/Space science worksheet questions (help)?

I know some seem easy but I would like to be certain. Any help is appreciated. 1. Which one of the following is NOT necessary for thunderstorm development? a) lifting action b) sufficient moisture in the atmosphere for cloud development c) high wind speeds d) unstable air 2. Which of the following statements is FALSE? a) Warm air is less dense than cold air. b) The cumulus stage of a thunderstorm usually features heavy rains. c) The first stage of a thunderstorm's development is the cumulus stage. 3. The name we give to the cloud associated with the mature stage of a thunderstorm is: a) cumulus b) towering cumulus c) cumulonimbus d) fog 4. We use __________ to measure the heat in the air. 5. Which of the following geographic regions would be the best absorber of heat energy? a) The smooth sandy beaches of Virginia b) Rough, icy snow packs of Alaska c) The dark plowed Kansas corn fields d) The green forests of the Smokey Mountains e) Rough, transparent water of California beaches 6. The measure of the weight of air above us is called air __________. 7. When a cold front meets a warm front, we may experience __________. a) rain b) precipitation c) snow d) All of the above 8. Cold, dry air masses __________ and __________ air masses. a) rise; are replaced by warm, moist b) rise; flow toward warm, more moist c) sink; flow toward warmer, more moist d) sink; are replaced by warm, moist e) None of the above 9. Wind is the movement of __________. a) sand b) tides c) clouds d) air 10. Which of the following is the MOST destructive force associated with tornadoes? a) Heavy rains. b) The explosive pressure difference between the inside of a home and the lower pressure outside due to the tornado. c) The destructive pressure of the high winds associated with the tornado. d) The flying debris or "missiles" that travel with the tornado. 11. True or False? When the National Weather Service issues a Tornado Watch, it means that a tornado has been sighted. 12. Fog forms whenever there is a loss of heat from the earth through __________. a) radiation b) evaporation c) condensation d) frost e) strong winds 13. Relative humidity is a ratio of __________. a) moist air to dry air b) how much water vapor is in the air compared to how much the air can hold at that temperature c) how much heat air can hold with a given moisture d) how much water air can hold at a given temperature e) warm air to dry air 14. A large body of water affects the climate by keeping places near it __________ in winter and __________ in summer. a) warmer...cooler b) cooler...warmer 15. Changes in the earth's atmosphere over a short period of time are referred to as __________. a) meteorology b) climate c) weather d) geography e) climatology more

Resolved Question: help with my home wotrk?

Chapter 5 DRW Section 1 1. To determine if an object is in motion, compare its position over time to a ____ point. Change the underlined word to make the statement true. 2. Motion is the rate at which an object moves. 3. How fast an object moves depends on the distance traveled and the road taken to travel that distance. 4. The SI unit for speed is km/h. 5. Velocity is speed and _____. 6. Which of the following does not experience a change in velocity? a.A motorcycle driving down a straight street applies the breaks. b.While maintaining the same speed and direction, an experimental car switches from gasoline to electric power. c.A baseball player running from first base to second base at 10 m/s comes to a stop in 1.5 s. d.A bus traveling at a constant speed turns a corner. 7. To find the resultant velocity, add velocities that are in the ____ direction(s). Subtract velocities that are in _____ direction(s). 8. Another name for acceleration in which velocity increases is ____ acceleration. 9. Negative acceleration, or acceleration in which velocity decreases, is also called _____. 10. When you are standing completely still at the equator, you are accelerating. (True or false) 11. How can you recognize acceleration on a graph? a.The graph shows distance versus time. b.The graph shows time versus distance. c.Velocity increases as time passes. d.The graph is a straight line. Section 2 1. All forces have size and direction. (True or false) 2. A force is a push or a pull. (True or false) 3. Forces are measured in liters. (True or false) 4. You can exert a push force without there being an object to receive the force. (True or false) 5. In which of the following situations is a force being exerted? (circle all that apply) a.A woman pushes an elevator button. b.A pile of soil sits on the ground. c.Socks cling together when they have just come out of the dryer. d.Magnets stick to the refrigerator. 6. Forces are unbalanced when the net force is not equal to ____. 7. To start or change the motion of an object, you need a(n) _____ force. (balanced or unbalanced) 8. Forces are balanced when the net forces applied to an object is _____ zero. (less than, greater than or equal to) Section 3 1. Friction occurs when the hills and valleys of 2 surfaces stick together. (True or false) 2. Friction is affected by the amount surface that is touching. (True or false) Column AColumn B 3. ____ a hockey puck crossing an ice rinka. sliding friction 4. ____ a crate resting on a loading rampb. rolling friction 5.____ wheeled cart being pushedc. fluid friction 6. ____ air rushing past a speeding car.d. static friction 7. Static friction is at work if you try to drag a heavy suitcase along the floor and the suitcase _____. (moves or doesn’t move) 8. As soon as an object starts moving, static friction _____. (increases or disappears) 9. Which of the following are ways to reduce friction? (circle all that apply) a.Use a lubricant. b.Make rubbing surfaces smoother. c.Push surfaces together. d.Change sliding friction to rolling friction. Section 4 1. The force of attraction between 2 objects due to their masses is the force of _____. 2. The force that pulls toward your pencil is called the _____ force. 3. Scientists think seeds can sense gravity. (True or false) 4. Newton’s law of universal gravitation describes the relationships between all of the following EXCEPT a.distancec. heat b.massd. gravitational force 5. Which of the following objects are subject to the law of universal gravitation? (circle all that apply) a. satellitesc. frogs b. waterd. stars 6. If the distance between the objects is the same, the gravitational force between 2 feathers is greater than the gravitational force between 2 bowling balls. (True or false) 7. If 2 objects are moved _____ each other, the gravitational force between them increases. (away from or toward) 8. In a _____, gravity is so great that even light can’t escape. 9. The strength of the gravitational force exerted by an object depends on the _____ of the object. 10. The measure of the Earth’s gravitational force on an object is the object’s _____. Write M for mass or W for weight. 11. _____ different on the moon 12. _____ expressed in newtons 13. _____ measured in grams 14. _____ measure of gravitational force 15. _____ value doesn’t change 16. _____amount of matter in an object 17. On Earth, mass and weight are constant, which means they are the same thing. (True or false) more

Top How Has 9 11 Affected Air Travel Links

Air travel in the Upstate affected by 9/11 attacks | GoUpstate.com ...
Air travel in the Upstate affected by 9/11 attacks Law enforcement agencies at all levels pooling resources ... "It has become a part of our culture. We need to be mindful of that and ...

The After-Effects for Air Travel Post 9/11
The After-Effects for Air Travel Post 9/11 ... that can be linked to 9/11 to at least some degree. The Airline Pilots Association has their own take on safety and security since 9 ...

Reflecting on the Events of September 11 and its effects on Air Travel
... as immediately affected by ... Access-able travel since September 11th Since 9/11 travel for passengers with disabilities has grown increasingly difficult. With a fluctuating air travel ...

9/11 Effects In The USA
9/11 Effects In The USA. On September 11, 2001, three airplanes were hijacked by ... Air travel volume dropped precipitously, as businesses and citizens curtailed traveling.

How did the September 11 attacks affect the airline industry ...
Air Transport World...events of September 11, it is difficult...years the airline industry has been...period, airlines ... was...out how Sept. 11 would affect ... were affecting the travel ...

The impact of 9/11 on theme parks and amusement parks- How September ...
Has 9/11 affected your travel plans? Share your thoughts with us. ... no industry has been more profoundly affected than travel. ... And domestic air travel is down significantly as ...

Online NewsHour: Forum | How Has Sept. 11 Affected You? | September 5 ...
How Has Sept. 11 Affected You? ... Not out of fear but with the hassle I don't find air travel fun anymore." (9/5/06) Andy V. D. P. writes: "9/11 ...

Post-Sept. 11 drop in air travel slowed that winter's flu spread - The ...
9/11 air travel dip linked to flu's delay Study could affect response planning ... evidence that restricting air travel can delay flu's spread . Air travel has ...

Since 9/11 the Air Travel Industry Has Been Unstable
Since 9/11, the airline industry has been wracked with increasing ... and human loss that can permanently affect world markets. Terrorism and World Markets Oil Air Travel