Boundaries, Lift, Air Mass, Density

What is air pressure?

• air that is moving due to wind or rotation of the Earth

• The force exerted on a surface by the weight of air all around us

What is density?

• The amount of matter/stuff there is in a specific volume

• Density is the same thing as air pressure

What does Bernoulli’s principle tell us about air pressure?

• That the more air there is, the higher the density

• Air pressure is related to temperature

• The faster air moves, the lower its pressure

• Air pressure is how temperature changes

What is the name for the shape of a wing?

• teardrop

• airfoil

• wings

• slant

What are the four forces that impact the flight of an airplane? Check all that apply

• thrust

• weight

• drag

• magic

• lift

If a plane is taking off, it should do what?

• Increase drag

• decrease weight

• increase lift

• decrease thrust

When lift equals weight, what happens during flight?

• The plane goes higher

• The plane stays the same altitude

• The plane goes down

When lift is greater than weight, what happens?

• The plane goes higher

• The plane stays the same altitude

• The plane goes down

When weight is greater than lift, what happens?

• The plane goes higher

• The plane stays the same altitude

• The plane goes down

Tags

NGSS.MS-PS2-2

The aeroplane is flying level at constant altitude. Which two forces must be the same?

• Thrust and Drag

• Thrust and Lift

• Lift and Weight

• Weight and Drag