Types of Forces
Equations and Math
Water/Air Pressure
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100
A hydraulic system uses fluid to do what?
What is multiply force
100
What is the SI unit for pressure?
What is a Pascal (Pa)
100
At higher elevations, is there more or less air pressure?
What is less!
100
An object sinks in a bucket of water, so its density must be
What is greater than water
100
The pressure exerted by Earth's atmosphere
What is air pressure
200
What force pushes up on an airplane wing as it moves through the air?
What is lift
200
The equation for pressure is
What is force over area
200
As a diver goes deeper into the water, does fluid pressure increase or decrease?
What is increase?
200
As the speed of a moving fluid increases, the fluid pressure
What is decreases
200
What uses a fluid to transmit a force?
What is a hydraulic device?
300
Which principle explains why an airplane flies?
What is Bernoulli's Principle
300
The density of an object is its ___ divided by its volume
What is mass?
300
Objects in water feel lighter because of
What is buoyant force
300
Pressure tells how much ____ is on an area
What is force
300
The flow of smoke up a chimney is partly explained by ____
What is Bernoulli's Principle
400
The force that makes an airplane or flying object go forward
What is thrust
400
Pressure equals force over what?
What is area?
400
Why does a hot air balloon rise?
What is hot air is less dense than normal temperature air.
400
Air pressure is measured using a
What is barometer
400
Which direction does the buoyant force work in?
What is upwards
500
A force on a confined fluid changes the pressure all through the fluid. This is which principle?
What is Pascal's Principle
500
Explain how a submarine changes its density to float or sink
What is fills tanks with air or water to change density
500
Buoyant Force acts in opposition to this force
What is gravity
500
If you know the weight of an object that floats, you know the object's
What is buoyant force?
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