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Physical Science Ch 13 Review #2
Test Description: Fluid Test Review #2
Instructions: Answer all questions to get your test result.
1) Which of the following states Bernoulli's Principle?
A
As the speed of a fluid decreases, the pressure within the fluid decreases.
B
As the speed of a fluid increases, the pressure within the fluid decreases.
C
none of the above
D
As the speed of a fluid changes, the pressure of the fluid remains constant.
2) The upward force acting on the wing of an airplane in flight is called
A
drag
B
lift
C
weight
D
thrust
3) Which of the following statements is true about an airplane wing during flight
A
Air below the wing travels faster than air above the wing.
B
The lift acting on the wing reduces the weight of the wing.
C
The wing exerts pressure equally in all directions
D
Air above the wing travels faster than air below the wing.
4) The upward force acting on an object submerged in a fluid is called
A
weight
B
buoyant foece
C
drag
D
pressure
5) A brick weighs 26 N. Measured underwater, it weighs 11 N. What is the sizeof the buoyant force exerted by the water on the brick?
A
37 N
B
15 N
C
26 N
D
11 N
6) The strength of the buoyant force acting on an object in a fluid depends on the object's
A
mass
B
weight
C
surface area
D
volume
7) The buoyant force on an object in a fluid is equal to the weight of the
A
fluid surrounding the object
B
fluid
C
object
D
fluid displacement by the object
8) The relationship between buoyant force and weight of a displaced fluid was first stated by
A
Bernoulli
B
Archimedes
C
Newton
D
Pascal
9) A ball is floating partially submerged in a liquid. The buoyant force acting on the ball equals he
A
weight of the ball
B
volume of the ball below the surface
C
mass of the ball
D
volume of he ball above the surface
10) Which of the following substances will float in corn syrup? (The density of corn syrup is 1.38 g/cm3)
A
silver (10.5 g/cm3)
B
copper (8.9 g/cm3)
C
glycerin (1.26 g/cm3)
D
iron (7.8 g/cm3)
11) Which of the following substances will sink in glycerin? (The density of glycerin 1.26 g/cm3)
A
benzene (0.90 g/cm3)
B
water (1.00 g/cm3)
C
aluminum (2.70 g/cm3)
D
ethyl alcohol (0.81 g/cm3)
12) A cork is floating in salty water. As more salt is added to the water to increase its density, the cork will
A
float at a higher level in the water
B
float at the same level in the water
C
float at a lower level in the water
D
sink
13) Two identical corks float in separate beakers. One beaker contains distilled water. The other contains very salty water. Which of the following statements is true?
A
Both corks are subject to the same buoyant force.
B
The cork in the very salty water floats at a lower level than the other cork.
C
The corks float at the same level in both liquids.
D
The corks will eventually sink.
14) Why does a hot-air balloon float?
A
The weight of the balloon is less than the weight of the air displaced by the balloon.
B
The weight of the air displaced is less than the volume of the balloon.
C
The volume of air displaced by the balloon is less than the volume of the balloon.
D
The shape of the balloon provides lift?
*select an answer for all questions
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