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English 24 Public

Flight Grade 6

Study Slideshow

What is a vaccuum?

A space with nothing in it (no air)

What is air pressure?

the force of air on surrounding objects (higher pressure = more force)

Air can be compressed, true or false?

True

What did Bernoulli say about fast and slow air?

Faster air exerts lower pressure, slower air exerts higher pressure

Air is constantly pressing on us in daily life, true or false?

True!

What happens to air when you heat it up?

The air particles move faster, air expands, air becomes less dense, and air rises

What would happen if you blew cold air inside a hot air balloon while it was flying?

It would fall! Cold air sinks.

A balloon with air inside of it is heavier than a balloon without air inside of it, true or false

true!

Where does gravity come from?

Gravity is a pulling force that comes from very large and heavy objects, like planets.

How do wings generate lift?

The airfoil shape of a wing pushes air down and causes a pressure difference between the bottom and top of the wing.

What is an airfoil?

The common shape of a wing, that helps it generate lift.

Name one kind of engine

Piston engine, jet engine, rocket engine

What kind of force do engines produce?

Thrust.

Which plane will experience less drag, and why?

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!

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.

What's an example of a flying aircraft with no engine?

glider, hang glider, flying squirrel, paper airplane, etc.