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flight
science quiz on flight
| Question | Answer |
|---|---|
| fast moving air creates ______ air pressure | low |
| slow moving air creates ______ air pressure | high |
| true/false: Air pressure makes things fly | true |
| air moving over the wings creates ______ | lift |
| lift comes from moving _______ | air |
| The moving air creates differences in ___ ________ | air pressure |
| The air under the wings is going slower / faster than the air going over the top of the wings | slower |
| what is the angle of attack? | It is the angle where the wings meet the oncoming air. |
| There is higher air pressure under / over the wing of a plane | under |
| Wings develop differences in air pressure when they are (two answers) | 1) Curved 2) When they're on an angle |
| Planes take off towards / against the wind and land towards / against the wind | 1) towards 2) towards |
| In order to get lift the air must first be __________________ | moving over the wings |
| dynamic pressure is the pressure of ______ ___ | moving air |
| wings will maintain lift as long as they have an _____ __ ______ | angle of attack |
| why do things fly? (three answers) | 1) air has pressure 2) You have to have differences in air pressure 3)Angle of attack |
| What is the bernoulli effect? | an increase in the velocity in any fluid is always accompanied by a decrease in pressure |
| air can be used as a force to move objects? (true or false) | true |
| As air moves over the top of an airplane's wing it creates high air pressure (true or false) | false |
| the rotation of a helicopters wing determines only how fast a helicopter flies (true or false) | false |
| the shape of a wing determines how much lift it will create (true or false) | true |
| bird flight and airplane flight use the same principles of lift and angle of attack (true or false) | true |
| airplanes take off with the wind but land against the wind (true or false) | false |
| what is air pressure | the force that the molecules of gas exert because of their kinetic energy on all of the surfaces they touch |
| what is a wind tunnel | a device that moves air rapidly through a restricted space, used the test airplane wings or automobile designs for aerodynamic characteristics |
| what is low pressure | the force that molecules of gas exert, either because there is a small quantity of molecules or because the gas molecules have a low amount of kinetic energy |
| what is high pressure | the force that molecules of gas exert, either because there is a large quantity of molecules or because the gas molecules have a high amount of kinetic energy |
| what is lift | to raise an object into the air due to the difference in air pressure below and above the object |
| what is wind | the movement of air |
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cookiecraver123