Transcript 8th- Chapter 11 Review Game

8th- Chapter 11 Review
Game
• Which type of substances does Pascal’s
principle deal with?
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A. solids
B. fluids
C. powders
D. metals
• BBBB
• Water pressure increases as
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A. depth increases
B. gravity decreases
C. force decreases
D. acceleration increases
• AAAA
• Air pressure decreases as
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A. velocity increases
B. elevation increases
C. acceleration decreases
D. gravity increases
• BBBB
• Given that the air pressure outside your
body is so great, why aren’t you crushed?
• A. Human skin is extremely strong
• B. Earth’s gravity cancels out the air
pressure
• C. Pressure inside your body balances the
air pressure outside your body.
• D. Inertia changes the pressure before it
comes into contact with you.
• CCCCCC
• Air pressure exerted equally on an object
from different directions is
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A. balanced pressure
B. gravitational pressure
C. fluid pressure
D. constant pressure
• AAA
• A unit of pressure is called a
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A. bernoulli
B. pascal
C. pound
D. meter
• BBB
• Snowshoes enable a person to walk on
deep snow because the snowshoes
• A. decrease the person’s weight on the
snow
• B. increase the area over which the
person’s weight is distributed.
• C. increase the pressure on the snow
• D. increase the buoyancy of the person
• BBBB
• One application of Pascal’s principle is
• A. a hydraulic car lift.
• B. the flight of an airplane
• C. a speedboat’s bottom slapping against
the waves.
• D. the buoyancy shown by ducks and
other waterfowl.
• AAA
• What scientific rule describes why water
squirts from a plastic bottle when it is
squeezed?
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A. Bernoulli’s principle
B. Archimedes’ principle
C. Pascal’s principle
D. Newton’s first law of motion
• CCC
• What does a hydraulic system do?
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A. decrease pressure
B. increase velocity
C. multiply force
D. reduce inertia
• CCC
• Which of the following is true of the
buoyant force?
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A. It acts in the downward direction
B. It acts with the force of gravity
C. It acts in the upward direction
D. It makes an object feel heavier
• CCCC
• What effect does a buoyant force have
on a a submerged object?
• A. It causes the object to sink in a fluid.
• B. It causes a net force acting upward on
the object.
• C. It cases the object to float in a fluid.
• D. It causes a net force acting downward
on the object.
• BBB
• If an object floats, the volume of
displaced water is equal to the volume of
• A. the entire object
• B. the portion of the object that is above
water.
• C. The portion of the object that is
submerged.
• D. exactly half of the object.
• CCCC
• What scientific rule states that the
buoyant force on an object is equal to the
weight of the fluid displaced by the
object?
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A. Archimedes’ principle
B. Pascal’s principle
C. Bernoulli’s principle
D. Newton’s third law of motion
• AAAA
• When water fills a submarine’s floatation
tanks, the overall density of the
submarine
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A. decrease
B. stays the same
C. increases
D. reduces the buoynat force.
• CCC
• Pressure can be measured in units of
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A. newtons
B. newtons per square meter
C. newtons per centimeter
D. newtons per cubic centimeter
• BBB
• Which of these substances is the LEAST
dense?
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A. wood
B. copper
C. mercury
D. rubber
• AAA
• An object that is more dense than the
fluid in which it is immersed will
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A. sink
B. rise
C. neither rise nor sink
D. sink at first, then rise slowly
• AAA
• The mass per unit volume of a substance
is its
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A. density
B. buoyancy
C. weight
D. fluid pressure
• AAA
• Bernoulli’s principle helps to explain
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A. hydraulic brakes
B. buoyancy
C. momentum
D. flight
• DDD
• Smoke rises up a chimney partly because
of
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A. Archimedes’ principle
B. Pascal’s principle
C. Bernoulli’s principle
D. Newton’s third law of motion
• CCC
• A ship stays afloat as long as the buoyant
force is
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A. less than the ship’s weight
B. equal to the ship’s weight
C. less than the ship’s speed
D. greater than the ship’s speed
• BBB
• Pascal’s principle states that when force
is applied to a confined fluid, the change
in pressure is transmitted
• A. only to the are where the pressure is
applied
• B. equally to all parts of the fluid
• C. to any weakness in the fluid’s container
• D. in the direction of the buoyant force
• BBB
• A substance whose shape can easily
change is a
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A. solid
B. powder
C. fluid
D. metal
• CCC
• A material that can easily flow is called a
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A. fluid
B. solid
C. buoyant force
D. hydraulic material
• AAA
• What scientific rule states that the
pressure exerted by a moving stream of
fluid is less than the pressure of the
surrounding fluid?
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A. Archimedes’ principle
B. Pascal’s principle
C. Bernoulli’s principle
D. Newton’s third law of motion
• CCC
• The pressure in the deepest parts of the
ocean is roughly how many times the
usual air pressure you experience?
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A. 10
B. 100
C. 1,000
D. 1,000,000
• CCCC
• Which of these multiplies a force by
transmitting it to a large surface area?
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A. a hydraulic system
B. a buoyant foce
C. a balanced pressure
D. a force pump
• AAA
• The braking system on a car is an example
of
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A. a hydraulic system
B. buoyancy
C. Bernoulli’s principle
D. Newton’s third law of motion
• AAA
• A barometer is used to measure pressure
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A. in the atmosphere
B. under water
C. in hydraulic systems
D. under a snowshoe
• AAA
True or False
• The pressure you exert on the floor
decreases when you stand on your
toes because the area on which you
exert a force decreases.
• FALSE
True or False
• Water pressure is due to the weight
of the water above a particular point.
• TRUE
True or False
• As an airplane wing moves, air moves
faster above the wing than below it.
• TRUE
True or False
• Wind blowing across the top of a
chimney helps to draw air up the
chimney. This is an example of
Bernoulli’s principle.
• TRUE
True or False
• As a ship is unloaded, it rises higher
in the water because the density of
the ship and its cargo increases.
• FALSE
True or False
• Bernoulli’s principle states that the
buoyant force acting on a submerged
object is equal to the weight of the
fluid the object displaces.
• FALSE
True or False
• More force is required to lift an
object in water than on land because
of the buoyant force of the water.
• FALSE
True or False
• Hydraulic systems use two pistons
with different surface areas to lift
heavy objects.
• TRUE
True or False
• In a stationary fluid, the buoyant
force is exerted equally in all
directions.
• FALSE
True or False
• The air pressure at an altitude of 3
km is less than the air pressure at 1
km.
• TRUE
Completion
• According to Bernoulli’s principle, the
pressure in a moving stream of fluid
is __________ than the pressure of
the surrounding fluid.
• LOWER
Completion
• When you squeeze on a bottle with a
closed top, the change in pressure is
transmitted __________ to all
parts of the fluid.
• EQUALLY
Completion
• The pressure resulting from a force
of 50 N exerted over an area of 5
m2 is _____ Pa.
• 10
Completion
• When you squeeze one end of an
inflated balloon, the other end bulges
out. This behavior is an example of
_______ principle.
• PASCAL’S
Completion
• Pressure _________ as the area
over which a force is distributed
increases.
• DECREASES