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8th Forces In Fluids
Test Description: Review for Test
Instructions: Answer all questions to get your test result.
1) Which of the following is not the SI unit of pressure?
A
newtons
B
N/m*m
C
Pa
D
pascals
2) Pressure is
A
force + area
B
area / force
C
force / area
D
force x area
3) At higher elevations, air pressure is
A
less because gravity is stronger
B
less because the air is moving faster.
C
greater because there is more air below
D
less because there is less air above
4) When pressure is applied to a confined liquid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called
A
Newton's Principle
B
Pascal's principle
C
Archimedes principle
D
Bernoulli's prinicple
5) An object under water feels light than it does in air because of
A
fluid speed
B
buoyancy
C
air pressure
D
temperature
6) An object is dropped into a beaker containing a liquid. The object drops to the bottom of the beaker, therefore
A
the volume of the liquid displaced is more than the volume of the object.
B
the density of the object is greater than the density of the liquid.
C
the mass of the object is less than the mass of the liquid
D
the density of the object is less than the density.
7) If you blow a stream of air between to balloons that are next to each other, the balloons
A
move away from each other
B
move toward each other
C
rise
D
move randomly
8) Air above an airplane wing is moving faster than air below an airplane wing. This causes the plane to
A
increase elevation
B
decrease elevation
C
accelerate
D
slow down
9) Fluids exert pressure because they are made up of tiny
A
forces that sum together
B
moving molecules that exert forces
C
molecules that push upward
D
particles that are buoyant
10) Bubbles rise in water because they are
A
so tiny
B
less dense than water
C
more dense than water
D
fluids
*select an answer for all questions
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