Drag is caused by air resistance, or the rubbing (friction) of air against the surface of an object. The more air can pass over the object, the less drag!
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15
What are the four forces of flight?
Weight, Lift, Drag, Thrust
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baam
Lose 25 points!
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fairy
Take points!
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25
gift
Win 25 points!
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banana
Go to last place!
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10
Air is constantly pressing on us in daily life, true or false?
True!
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15
Racing cyclists often bend their head down low. Why do they do this?
Bending their head down reduces the area of their body that is exposed to the air. This means less air resistance, and less drag.
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baam
Lose 20 points!
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fairy
Take points!
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25
fairy
Take points!
5
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25
lifesaver
Give 5 points!
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15
In order for a helicopter to hover in the air, all four forces of flight have to be ____________
Balanced / Equal
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10
What is an airfoil?
The common shape of a wing, that helps it generate lift.
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20
What happens to air when you heat it up?
The air particles move faster, air expands, air becomes less dense, and air rises
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10
Piston engines turn a set of small wings called ___________ to produce thrust
A propeller!
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15
What is this??
Vacuum sealed chicken!
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monster
Reset all scores!
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star
Double points!
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shark
Other team loses 25 points!
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lifesaver
Give 20 points!
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15
What is air pressure?
the force of air on surrounding objects (higher pressure = more force)
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5
A balloon with air inside of it is heavier than a balloon without air inside of it, true or false