Lift in planes exlpained

How do airplanes stay in the air

Lesson created by The Llama

PRINCIPLES OF FLIGHT

FORCE

A force is a push or a pull that causes an object to change its shape or direction

THRUST

Thrust is the force that propels a machine in a direction of motion.

It is produced by an engine

DRAG

Drag is caused by friction and differences in air pressure.

Drag is the force that acts opposite to the force of motion

LIFT

it is created by the differences in air pressure.

Lift is a force that acts at a right angle to the direction of motion through the air. (upward)

WEIGHT

weight acts in a downward direction toward the centre of the earth

Weight is the force of gravity

Match

Match the following words with the definitions.

• pervasive

• pocket

• debunked

• contour

• centripetal

spreading widely throughout an area or a group of people.

a low air density or a descending air current, causing an aircraft an abrupt decrease in height.

expose the falseness or hollowness of (a myth, idea, or belief).

an outline, especially one representing or bounding the shape or form of something.

moving or tending to move toward a centre.

• spreading widely throughout an area or a group of people.

• a low air density or a descending air current, causing an aircraft an abrupt decrease in height.

• expose the falseness or hollowness of (a myth, idea, or belief).

• an outline, especially one representing or bounding the shape or form of something.

• moving or tending to move toward a centre.

Match

Match the following words with the definitions.

• curvature

• tilted

• steeply

• turbulent

• nuanced

the fact of being curved or the degree to which something is curved.

move or cause to move into a sloping position.

at a steep angle; sharply.

characterized by conflict, disorder, or confusion; not controlled or calm.

characterised by subtle shades of meaning or expression.

• the fact of being curved or the degree to which something is curved.

• move or cause to move into a sloping position.

• at a steep angle; sharply.

• characterized by conflict, disorder, or confusion; not controlled or calm.

• characterised by subtle shades of meaning or expression.

Match

Match the following words with the definitions.

• flawed

• circulate

• dense

• aloft

• buoyant

blemished, damaged, or imperfect in some way.

move or cause to move continuously or freely through a closed system or area.

closely compacted in substance.

flying or situated in the air; overhead.

able or apt to stay afloat or rise to the top of a liquid or gas.

• blemished, damaged, or imperfect in some way.

• move or cause to move continuously or freely through a closed system or area.

• closely compacted in substance.

• flying or situated in the air; overhead.

• able or apt to stay afloat or rise to the top of a liquid or gas.

Match

Match the following words with the definitions.

• emphasise

• vortices

• foray

• confound

• aeronautics

give special importance or prominence to (something) in speaking or writing.

a mass of whirling fluid or air, especially a whirlpool or whirlwind.

a sudden attack or incursion into enemy territory, especially to obtain something; a raid.

cause surprise or confusion in (someone), especially by acting against their expectations.

the science or practice of travel through the air.

• give special importance or prominence to (something) in speaking or writing.

• a mass of whirling fluid or air, especially a whirlpool or whirlwind.

• a sudden attack or incursion into enemy territory, especially to obtain something; a raid.

• cause surprise or confusion in (someone), especially by acting against their expectations.

• the science or practice of travel through the air.

Multiple Choice

There is a ____ pressure region above the wing and a ____ pressure region below the wing.

• High, low

• Low, high

• Low, low

• High, high

Multiple Choice

Which force acting on a flying object uses an engine?

• drag

• lift

• thrust

• weight

Multiple Choice

Why did Einstein’s wing fail?

• It was too curved, causing turbulence.

• It was not curved enough and did not deflect air downward.

• It was too heavy, causing the plane to sink.

Multiple Choice

Which force is also called the force of gravity

• drag

• thrust

• lift

• weight

Multiple Choice

Why is Bernoulli’s principle alone not enough to explain lift?

• It is not correct.

• It cannot be used to describe air.

• It doesn’t explain why air travels faster below the wing.

• The explanation given by Bernoulli’s principle alone is incomplete.

Multiple Choice

Which force uses the bernoulli's principle?

• drag

• thrust

• lift

• weight

Multiple Choice

The low-pressure region above the wing causes ____.

• Air to speed up and bend around the wing

• Air to slow down and bend around the wing

• Air to speed up and bend away from the wing

• Air to slow down and bend away from the wing

Multiple Choice

Increasing the angle of the plane wing ____.

• Doesn't change the amount of lift

• Increases lift

• Generates more lift, but too steep produces turbulence

• Doesn’t affect the air flow