Air and Flight

Which force causes the downward movement of the paper rotor?

• Gravity

• Thrust

• Lift

• Drag

What is the meaning of lift as it relates to an airplane?

• Backward force

• Upward force

• Downward force

• Forward force

The ailerons allow the plane to turn, which is known as a

• roll

• pitch

• yaw

• thrust

The purpose of the fin on a rocket is to

• reduce drag.

• generate lift.

• provide stability.

• streamline shape.

The parts of an airplane that can be adjusted to create more lift or drag are the

• flaps

• rudders

• ailerons

• elevators

The word that best describes the shape of an airplane's wing.

• Ailerons

• Bernoulli's Principle

• Airfoil

• Airway

If a constant stream of air is blown in between the two cans, then the cans will most likely move

• up and down.

• back and forth.

• toward each other.

• away from each other.

Parachutes cause objects to fall to the ground more slowly because they

• decrease the force of gravity.

• increase the force of gravity.

• decrease air resistance.

• increase air resistance.

Which of the following modifications would be expected to slow the parachute's fall the most?

• Decrease canopy size and add more suspension lines.

• Decrease canopy size and increse box size.

• Increse canopy size and remove some suspension lines.

• Increase canopy size and decrease box size.

When the glass reaches the bottom of the tank, the suar cube will most likely

• stay dry, because the air in the glass will expand.

• stay dry, because the air in the glass will take up space.

• get wet, because the water will exert less pressure than the air.

• get wet, because the water will exert more pressure than the air.