Airflow

What happens to the air pressure on the bottom of an object when the air above moves faster?

• It becomes less

• It becomes greater

• It stays the same

• It disappears

Air travels  ______________ over the top of a wing.

• faster

• slower 

• doesn't move at all

• the same speed as

What is the best depiction of Bernoulli's principle below?

• As the pressure of a fluid decreases, the speed increases

• As the pressure of a fluid increases, the speed increases

• As the pressure of a fluid decreases, the speed decreases

If you blow air between these two balloons, the pressure between the balloons would_________.

• Increase

• Decrease

• Stay the same

If the pressure is lower above the wing and higher below the wing, what will the airplane do?

• lift

• sink

• Neither lift or sink

Lift depends on angle of attack - up to a point, lift increases as the angle of attack increases; beyond that point, lift is lost. Angle of attack refers to the angle ______________.

• at which the wing is tilted into the airflow.

• at which the wing is lowered into the airflow.

• at which the wing is raised into the airflow.

• at which the wing is turned away from the airflow.

Drag depends on shape - a shape with low drag is usually long, thin, and smooth, rounded at the front and becomes more narrow at the back. Drag also depends on _________ - drag tends to increase as __________ increases.

Answer explanation

Tags

NGSS.MS-PS3-1

______ is a force that slows you down and works in the opposite direction than you are traveling.

• Drag

• Gravity

• Lift

• Thrust

What is the primary effect of increasing airflow speed over a surface?

• Increased pressure

• Decreased pressure

• No change in pressure

• Increased temperature

Which scientific principle explains the lift generated by an airplane wing due to airflow?

• Newton's Third Law

• Bernoulli's Principle

• Pascal's Law

• Archimedes' Principle