8th- Chapter 11 Review 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