Chapter 19 Review

PressureBuoyancy

Archimedes PrinciplePrinciple of flotation

a. depth of the measuring pointb. mass of the liquidc. volume of the liquidd. density of the liquide. both A and D

____ 1. Pressure in a liquid depends on the _____.

Answer

EThe depth and the density

a. In Lake Michigan

b. The pressure is approximately the same in both places

c. In the pond

Where is the pressure greater, one meter beneath the surface of Lake Michigan or one meter beneath the surface of a swimming pond?

Answer

B

They both have the same pressure because at the same depth

a. weight of the fluid displacedb. mass of the fluid displacedc. volume of the fluid displacedd. mass of the objecte. none of the above

Archimedes' principle says that an object is buoyed up by a force that is equal to the _____.

Answer

A

weight of the fluid displaced

a. Trueb. False

The reason objects immersed in a fluid experience an upward buoyant force is because fluid pressure on the

bottom of the object is greater than fluid pressure on the top of the object.

Answer

A

True

a. the jacket repels waterb. the jacket makes you weigh lessc. the jacket has the same density

as an average humand. you and the jacket together have

density less than your density alone

The reason a life jacket helps you float is that _____.

Answer

Dyou and the jacket together have

density less than your density alone

a. sinkb. neither float nor sink, but

stay anywhere it is putc. float

If an object has a density greater than the density of water, it will _____.

Answer

A.sink

a. iron is less dense than waterb. air inside decreases it's weightc. the iron displaces more water

than it would if it were in a solid block

d. an iron ship will always sink

The reason an iron ship doesn't sink is that _____.

Answer

c.the iron displaces more water than it would if it

were in a solid block

• What is the difference in water pressure between the top and bottom of a 100-m deep well?

Answer

• At the bottom the pressure is greater