Question 1

If the volume of an object were to double with no change in mass, its density would

Accepted Answer

A) be half. 
B) double. 
C) unchanged. 
A) be half. 
B) double. 
C) unchanged.

Question 2

When an ice cube in a glass of water melts, the water level

Accepted Answer

A) rises. 
B) falls. 
C) remains the same. 
A) rises. 
B) falls. 
C) remains the same.

Question 3

If a weighted air-filled balloon sinks in deep water, it will

Accepted Answer

A) likely sink to an equilibrium level before reaching the bottom. 
B) likely burst if water pressure is great enough. 
C) become less dense as it sinks. 
D) be acted on by a continually decreasing buoyant force. 
E) none of the above 
A) likely sink to an equilibrium level before reaching the bottom. 
B) likely burst if water pressure is great enough. 
C) become less dense as it sinks. 
D) be acted on by a continually decreasing buoyant force. 
E) none of the above

Question 4

Buoyant force is greatest on a submerged

Accepted Answer

A) 1-kg block of lead. 
B) 1-kg block of aluminum. 
C) same on each 
A) 1-kg block of lead. 
B) 1-kg block of aluminum. 
C) same on each

Question 5

The product of gas pressure and volume for a given mass of gas is constant

Accepted Answer

A) if the temperature doesn't change. 
B) whether or not temperature changes. 
C) never. 
D) none of the above 
A) if the temperature doesn't change. 
B) whether or not temperature changes. 
C) never. 
D) none of the above

Question 6

Ice cubes submerged at the bottom of a liquid mixture indicate that the mixture

Accepted Answer

A) fails to produce a buoyant force on the ice. 
B) has dissolved air in a liquid state. 
C) is composed of open-structured crystals. 
D) is less dense than ice. 
A) fails to produce a buoyant force on the ice. 
B) has dissolved air in a liquid state. 
C) is composed of open-structured crystals. 
D) is less dense than ice.

Question 7

A dam is thicker at the bottom than at the top because

Accepted Answer

A) water is denser at deeper levels. 
B) water pressure is greater at deeper levels. 
C) water is cooler at deeper levels. 
D) dams look better. 
E) none of the above 
A) water is denser at deeper levels. 
B) water pressure is greater at deeper levels. 
C) water is cooler at deeper levels. 
D) dams look better. 
E) none of the above

Question 8

An umbrella tends to jerk upward on a windy day principally because

Accepted Answer

A) air gets trapped under the umbrella, warms, and rises. 
B) buoyancy increases with increasing wind speed. 
C) air pressure is reduced over the curved top surface. 
D) all of the above 
A) air gets trapped under the umbrella, warms, and rises. 
B) buoyancy increases with increasing wind speed. 
C) air pressure is reduced over the curved top surface. 
D) all of the above

Question 9

What is the buoyant force acting on a 10-ton ship floating in the ocean?

Accepted Answer

A) less than 10 tons 
B) 10 tons 
C) more than 10 tons 
D) depends on density of seawater 
A) less than 10 tons 
B) 10 tons 
C) more than 10 tons 
D) depends on density of seawater

Question 10

Compared with a mercury barometer, the column height for an alcohol barometer would be

Accepted Answer

A) shorter. 
B) the same. 
C) higher. 
A) shorter. 
B) the same. 
C) higher.

Question 11

It would be easier to pull evacuated Magdeburg hemispheres apart if they were

Accepted Answer

A) held upside down. 
B) at sea level. 
C) 2 km beneath the ocean surface. 
D) 2 km above the ocean surface. 
E) none of the above 
A) held upside down. 
B) at sea level. 
C) 2 km beneath the ocean surface. 
D) 2 km above the ocean surface. 
E) none of the above

Question 12

A block of Styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is greatest on the

Accepted Answer

A) lead. 
B) Styrofoam. 
C) same for both 
A) lead. 
B) Styrofoam. 
C) same for both

Question 13

How deep must an inverted drinking glass be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half?

Accepted Answer

A) 76 cm 
B) 10.3 m 
C) 14.7 m 
D) 20.6 m 
E) 29.4 m 
A) 76 cm 
B) 10.3 m 
C) 14.7 m 
D) 20.6 m 
E) 29.4 m

Question 14

The buoyant force on an object is less when the object is

Accepted Answer

A) partly submerged. 
B) submerged near the surface. 
C) submerged near the bottom. 
D) none of the above 
A) partly submerged. 
B) submerged near the surface. 
C) submerged near the bottom. 
D) none of the above

Question 15

A wooden block with a piece of iron tied to its top floats in a bucket of water. If the wood and iron flips over so the iron is on the bottom, the water level at the side of the bucket

Accepted Answer

A) rises. 
B) falls. 
C) remains the same. 
A) rises. 
B) falls. 
C) remains the same.

Question 16

The reason a life jacket helps you float is that

Accepted Answer

A) the jacket causes you to weigh less. 
B) the jacket has the same density as an average human. 
C) the jacket repels water. 
D) if you sink, the jacket sinks. 
E) the combined density of you and the jacket is less than your density alone. 
A) the jacket causes you to weigh less. 
B) the jacket has the same density as an average human. 
C) the jacket repels water. 
D) if you sink, the jacket sinks. 
E) the combined density of you and the jacket is less than your density alone.

Question 17

As a woman holding her breath swims deeper and deeper in a lake, her density

Accepted Answer

A) increases. 
B) decreases. 
C) remains the same. 
A) increases. 
B) decreases. 
C) remains the same.

Question 18

Three large ice cubes float in bathtubs, each filled to the brim with water. Cube A has large air bubbles in it. Cube B has unfrozen water in it. Cube C has an iron railroad spike in it. When the ice cubes melt

Accepted Answer

A) water level in C decreases while water levels in the other two tubs remain the same. 
B) only the water in C will spill over. 
C) water level in A remains unchanged while the other tubs spill over. 
D) all tubs spill over. 
E) all levels remain the same. 
A) water level in C decreases while water levels in the other two tubs remain the same. 
B) only the water in C will spill over. 
C) water level in A remains unchanged while the other tubs spill over. 
D) all tubs spill over. 
E) all levels remain the same.

Question 19

Buoyant force is greatest on a submerged

Accepted Answer

A) 10-N block of lead. 
B) 10-N block of aluminum. 
C) same on each 
A) 10-N block of lead. 
B) 10-N block of aluminum. 
C) same on each

Question 20

If one caisson of the Falkirk Wheel carries a boat loaded with Styrofoam and the other carries a floating boat loaded with iron, the wheel would be

Accepted Answer

A) balanced. 
B) out of balance. 
C) unbalanced but still useful. 
D) useless for lifting boats. 
A) balanced. 
B) out of balance. 
C) unbalanced but still useful. 
D) useless for lifting boats.

Exam 5: Fluid Mechanics

If the volume of an object were to double with no change in mass, its density would

When an ice cube in a glass of water melts, the water level

If a weighted air-filled balloon sinks in deep water, it will

Buoyant force is greatest on a submerged

The product of gas pressure and volume for a given mass of gas is constant

Ice cubes submerged at the bottom of a liquid mixture indicate that the mixture

A dam is thicker at the bottom than at the top because

An umbrella tends to jerk upward on a windy day principally because

What is the buoyant force acting on a 10-ton ship floating in the ocean?

Compared with a mercury barometer, the column height for an alcohol barometer would be

It would be easier to pull evacuated Magdeburg hemispheres apart if they were

A block of Styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is greatest on the

How deep must an inverted drinking glass be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half?

The buoyant force on an object is less when the object is

A wooden block with a piece of iron tied to its top floats in a bucket of water. If the wood and iron flips over so the iron is on the bottom, the water level at the side of the bucket

The reason a life jacket helps you float is that

As a woman holding her breath swims deeper and deeper in a lake, her density

Three large ice cubes float in bathtubs, each filled to the brim with water. Cube A has large air bubbles in it. Cube B has unfrozen water in it. Cube C has an iron railroad spike in it. When the ice cubes melt

Buoyant force is greatest on a submerged

If one caisson of the Falkirk Wheel carries a boat loaded with Styrofoam and the other carries a floating boat loaded with iron, the wheel would be

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

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