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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
depth increases
B
acceleration increases
C
force decreases
D
gravity decreases
2) One application of Pascal's principal is
A
a speedboat's bottom slapping against the waves
B
the bouyancy shown by ducks and geese
C
the flight of a plane
D
a hydraulic car lift
3) What scientific rule do hydraulic systems follow?
A
Archimedes' principal
B
Newton's first law of motion
C
Bernoulli's principal
D
Pascal'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 buoyancy of the person.
C
increase the area over which the person's weight is distributed
D
increase the pressure on the snow.
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 takes in water
D
it propels faster through the water
7) Given that air pressure outside of your body is so great, why aren't you crushed?
A
inertia changes the pressure before it comes into contact with you.
B
Human skin is extremely strong
C
pressure inside your body balances the pressure outside your body
D
earth's gravity cancels out the air pressure
8) Smoke rises up a chimney partially because of
A
Pascal's principal
B
Newton's first law of motion
C
Archimede's principal
D
Bernoulli's principal
9) Air pressure increases as
A
elevation decreases
B
depth increases
C
elevation increases
D
depth decreases
10) The mass per unit volume of a substance is its
A
buoyancy
B
fluid pressure
C
weight
D
density
*select an answer for all questions
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