vocab
What is the upward force that fluids exert on all matter?
buoyant force
what principle is a change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluid?
Pascals principle
what does pressure depend on?
the depth of the fluid
what do fish use to change the amount of air that changes there density?
swim bladder
what type of wing does a glider use?
wing
what is any material that can flow and takes the shape of the container?
fluid
what principle is the buoyant force of an object in a fluid is an upward force equal to the weight of the volume of fluid that an object displaces?
Archimedes Principle
what is the pressure equation?
pressure=force/area
what gas is less dense than air?
helium
what type of wings does a jet use?
small
what is the force that opposes resists motion in fluid?
drag
what principle is when fluid pressure decreases as the speed of the fluid increases?
Bernoulli’s principle
how much times denser is water than air?
1000 times denser
the weight of the object is _____ than the weight of fluid displaced when buoying up.
less
what is the speed of the airplane determined on?
thrust
what is the forward force produced by an airplanes engine?
thrust
fluid pressure ________ as the speed of the fluid increses
decreases
what percentage of gases in the atmosphere are found within 10 km of earth's surface?
80% of gases
the weight of the object is _____ to the weight of fluid displaced when floating
equal
what can be determined by the size of the wing and speed the air is traveling around the wing?
lift
what is the amount of matter in a given space?
density
the_____ ______ of an object in a fluid is an _____ force equal to the weight of the volume of fluid that an object displaces.
buoyant force, upward
what does the pressure of atmosphere varied on?
altitude
the weight of an object is _______ than the weight of the fluid displaced when sinking.
greater
what part of the plane helps achieve flight due to the shape?
wing