1
What is the SI unit of pressure?
Pascal
What is any material that can flow and takes the shape of the container?
Fluid
How do fluids flow?
High to low pressure
what is the SI unit of force
Newton (N)
What does drag reduce?
Lift
How many more times greater is water than air?
1,000
What is pressure caused by the weight of the atmosphere?
Atmospheric pressure
What is the forward force produced by an airplane's engines?
Thrust
How do you find pressure?
Take the force divided by the area
What do fish have that changes their density?
Swim bladder
What is a device that transmits pressure from one point to another?
Hydraulic
What does pressure depend on?
Depth of the fluid
What is the amount of force exerted on a given area?
Pressure
What is standard atmospheric pressure?
101,300 Pa
What percent of all gases in the atmosphere are found within 10km of the Earth's surface?
80%
What is an upward force that fluids exert on matter?
Buoyant force
What reduces the lift of the plane?
Drag
What is an upward force on an object that opposes the downward pull of gravity?
Lift
What principle talks about fluid pressure?
Bernoulli's
When the weight of the object is equal to the weight of the displaced fluid what happens to the object?
It floats
What gas is less dense than air?
Helium
What principle explains how planes fly?
Bernoulli's principle
What is the amount of matter in a given space?
Density
What principle explains how boats float?
Archimedes'
When the weight of the object is less than the weight of the displaced fluid what happens to the object?
Buoying up