Ch. 13 Vocab

Question 0

Define the following:

pascal

Answer 0

the SI unit of pressure

Question 1

Define the following:

pressure

Answer 1

the result of a force distributed over an area

Question 2

Define the following:

fluid

Answer 2

a substance that assumes the shape of its container

Question 3

Define the following:

hydraulic system

Answer 3

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

Question 4

Define the following:

lift

Answer 4

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

Question 5

Define the following:

bouyancy

Answer 5

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

Question 6

Define the following:

buoyant force

Answer 6

an upward force that acts in the opposite direction of gravity

Question 7

Define the following:

Archimedes’ principle

Answer 7

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