Vocabulary
What is pressure caused by the weight of the atmosphere?
Atmospheric pressure
What does pressure depend on?
Depth of the fluid
If the weight of the object is greater than the weight of the fluid displaced what is the object doing?
Sinking
80 percent of all gases in the atmosphere are found within what distance of the Earth's surface.
10km
What has more engines but smaller wings?
Jet
What is any material that can flow and takes the shape of the container?
Fluid
What is the SI unit for pressure?
Pascal
If the weight of the object is equal to the weight of the fluid displaced what is the object doing?
Floating
What increases with depth due to gravity?
Water pressure
What has less engines but larger wings?
Glider
What is the upward force that fluids exert on all matter?
Buoyant force
What is the formula for pressure?
Pressure=force/area
If the weight of the object is less than the weight of the fluid displaced what is the object doing?
Buoying up
What reduces lift on a plane?
Drag
Which principle is this: Fluid pressure decreases as the speed of the fluid increases?
Bernoulli's principle
What is the forward force produced by an airplanes engines?
Thrust
How much more dense is water than air?
1000
What gas is less dense than air and floats in the air.
Helium
What do planes have to reduce drag?
Special flaps
Which principle is this: The buoyant force of an object in a fluid is an upward force equal to the weight of the volume that an object displaces.
Archemedes' principle
What is the amount of matter in a given space?
Density
What is the standard atmospheric pressure?
101,300pa
What can be determined by the size of the wing and the speed at which the air is traveling around the wing.
Lift
Altitude
Which principle is this: A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluids.
Pascal's principle