How an Airplane Flies

If an airplane engine cut out in midair, which force would decrease almost immediately?

• Gravity

• Thrust

• Weight

• Drag

What word describes the following shape?

• Airway

• Airfoil

• Aeron

• Airflow

What can you infer from the fact that airplane wings and birds' wings have similar shapes?

• That birds fly better than airplanes because they existed first

• That birds and airplanes take off in the exact same way

• That airplane wings were originally covered in feathers

• That aircraft engineers studied birds' wings when they designed plane wings

Tags

NGSS.MS-LS4-2

When a plane is in flight, what's the main difference between the air below and above its wings?

• The air above the wings has lower pressure

• The air below the wings has lower pressure

• The air above the wings has a higher temperature

• The air below the wings has a higher temperature

When might you feel the force of drag in everyday life?

• When you take an elevator upward

• When you stick your hand out the window of a moving car

• When you sit under a ceiling fan

• When you take an escalator downward

In the phrase, "Lift and thrust counteract the forces of weight and drag," what does "counteract" mean?

• Balance out

• Outweigh

• Act in harmony with

• Overpower

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Streamlined objects experience less drag. Which of the following vehicles best fits the description "streamlined?"

• 
• 
• 
• 

According to Bernoulli's Principle, when the wind speed is high, wind pressure is ________

• high
• low
• not enough information
• None of the above

To generate lift, a blade is angled so the _________ pressure air moves under the blade.

• high
• low
• not enough information
• None of the above

Bernoulli’s Principle explains how an airplane can stay aloft.

• True
• False