Ch. 13 Vocab Flashcards

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0
Q

Define the following:

pascal

A

the SI unit of pressure

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1
Q

Define the following:

pressure

A

the result of a force distributed over an area

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2
Q

Define the following:

fluid

A

a substance that assumes the shape of its container

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3
Q

Define the following:

hydraulic system

A

a device that uses pressurized fluid action on pistons of different sizes to change a force

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4
Q

Define the following:

lift

A

the pressure difference between the top and the bottom of the wing creates an upward force

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5
Q

Define the following:

bouyancy

A

the ability of a fluid to exert an upward force on an object placed in it

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6
Q

Define the following:

buoyant force

A

an upward force that acts in the opposite direction of gravity

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7
Q

Define the following:

Archimedes’ principle

A

the buoyant force on an object is equal to the weight of the fluid displaced by the object

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