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Forces In Fluids Part 1
Test Description: This is a review for Ch 3 of Prentice Hall Force and Motion book.
Instructions: Answer all questions to get your test result.
1) Water pressure increases as
A
acceleration increases
B
force decreases
C
gravity decreases
D
depth increases
2) One application of Pascal's principal is
A
the flight of a plane
B
the bouyancy shown by ducks and geese
C
a speedboat's bottom slapping against the waves
D
a hydraulic car lift
3) What scientific rule do hydraulic systems follow?
A
Archimedes' principal
B
Pascal's principal
C
Newton's first law of motion
D
Bernoulli's principal
4) Snowshoes enable a person to walk on deep snow because the snowshoes
A
decrease the person's weight on the snow.
B
increase the pressure on the snow.
C
increase the buoyancy of the person.
D
increase the area over which the person's weight is distributed
5) If an object floats, the volume of displaced water is equal to the volume of (think of the mythbusters clip)
A
the portion of the object that is submerged
B
exactly half of the object
C
the portion of the object that is above water
D
the entire object
6) How is the density of a submarine decreased? (just like the cartesian diver)
A
it slows down
B
it releases water from flotation tanks
C
it propels faster through the water
D
it takes in water
7) Given that air pressure outside of your body is so great, why aren't you crushed?
A
earth's gravity cancels out the air pressure
B
pressure inside your body balances the pressure outside your body
C
inertia changes the pressure before it comes into contact with you.
D
Human skin is extremely strong
8) Smoke rises up a chimney partially because of
A
Bernoulli's principal
B
Newton's first law of motion
C
Pascal's principal
D
Archimede's principal
9) Air pressure increases as
A
elevation increases
B
depth increases
C
elevation decreases
D
depth decreases
10) The mass per unit volume of a substance is its
A
fluid pressure
B
buoyancy
C
weight
D
density
*select an answer for all questions
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