Understanding How Airplanes Fly

What role do jet engines play in the movement of an airplane?

• They reduce drag on the airplane.

• They generate thrust to move the airplane forward.

• They increase the weight of the airplane.

• They provide lift to the airplane.

How do airplane wings contribute to flight?

• They create drag.

• They increase the airplane's weight.

• They generate thrust.

• They provide lift by directing airflow.

What must be true for an airplane to stay in the air?

• Drag must be greater than thrust.

• Thrust must be less than drag.

• Lift must be greater than weight.

• Weight must be greater than lift.

What is the effect of drag on an airplane?

• It helps the airplane to lift.

• It pushes the airplane forward.

• It resists the airplane's motion.

• It reduces the airplane's weight.

Why is fuel necessary for flight?

• To create more drag.

• To generate thrust and overcome drag.

• To increase the airplane's weight.

• To reduce the airplane's lift.