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Chapter 7, Section 1 A
Test Description: Forces in Fluids: Fluids and Pressure
Instructions: Answer all questions to get your test result.
1) Of the following, where would atmospheric pressure be greatest?
A
at the altitude at which planes fly
B
on a mountaintop
C
neither gases nor liquids.
D
at sea level
2) If a fluid flows from area A to area B, then area A must be an area of greater ___.
A
pressure
B
volume
C
mass
D
temperature
3) Fluid pressure is exerted evenly in all directions, which explains why ___.
A
objects seem to weigh less in water
B
birds and airplanes can fly
C
some objects floats
D
bubbles are round.
4) The SI unit for pressure is ___.
A
N
B
Pa
C
Pr
D
K
5) Gases exert pressure ___.
A
horizontally
B
randomly in varying directions
C
evenly in all directions
D
vertically
6) The reason you blow round bubbles and not square ones is explained by ___.
A
Archimedes principle
B
Pascal's principle
C
Boyles's principle
D
Bernoulli's principle
7) 80% of the gases in the atmosphere are found within ___ of the Earth's surface.
A
50 km
B
10 km
C
5 km
D
1 km
8) Pressure depends on ___.
A
the temperature of the fluid
B
the total amount of fluid present
C
the compressibility of the fluid
D
the depth of the fluid
9) You may feel discomfort in your ears when you take off in an airplane because the pressure in your inner ear ___.
A
is not affected and cannot be related to the atmospheric pressure at a high altitude
B
is equal to the atmospheric pressure at a high altitude
C
is greater than the atmospheric pressure at a high altitude
D
ls less that the atmospheric pressure at a high altitude
10) A bicycle tire remains inflated because air particles ___.
A
are constantly moving and pushing against the inside of the tire
B
displace the tire's density
C
are less dense than the tire
D
for a crystal matrix inside the tire
*select an answer for all questions
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