88thth- Chapter 11 - Chapter 11 Review GameReview Game

88thth- Chapter 11 - Chapter 11 Review GameReview Game

• Which type of substances does Pascal’s principle deal with?

• A. solids• B. fluids• C. powders• D. metals

• BBBB

• Water pressure increases as

• A. depth increases• B. gravity decreases• C. force decreases• D. acceleration increases

• AAAA

• Air pressure decreases as

• 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

• A. balanced pressure• B. gravitational pressure• C. fluid pressure• D. constant pressure

• AAA

• A unit of pressure is called a

• 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?

• 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?

• A. decrease pressure• B. increase velocity• C. multiply force• D. reduce inertia

• CCC

• Which of the following is true of the buoyant force?

• 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?

• 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

• A. decrease• B. stays the same• C. increases• D. reduces the buoynat force.

• CCC

• Pressure can be measured in units of

• 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?

• A. wood• B. copper• C. mercury• D. rubber

• AAA

• An object that is more dense than the fluid in which it is immersed will

• 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

• A. density• B. buoyancy• C. weight• D. fluid pressure

• AAA

• Bernoulli’s principle helps to explain

• A. hydraulic brakes• B. buoyancy• C. momentum• D. flight

• DDD

• Smoke rises up a chimney partly because of

• 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

• 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

• A. solid• B. powder• C. fluid• D. metal

• CCC

• A material that can easily flow is called a

• 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?

• 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?

• 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?

• 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

• 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

• 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