Question 1

Place a kilogram block of iron at 40 degrees C into a kilogram of water at 20 degrees C and the final temperature of the two becomes

Accepted Answer

A)   at or about 30 degrees C.
B)   more than 30 degrees C.
C)   less than 30 degrees C.

Question 2

Consider a sample of water at 0 degrees C. If the temperature is slightly increased, the volume of the water

Accepted Answer

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

Question 3

Consider a steaming aluminum soda-pop can that contains a small amount of boiling water. When it is quickly inverted into a bath of cooler water the can is dramatically crushed by atmospheric pressure. This occurs because the pressure inside the can is rapidly reduced by

Accepted Answer

A)   condensation of steam inside.
B)   sudden slowing of the air and steam molecules inside.
C)   rapid conduction of heat to the relatively cool water.
D)   reduced internal energy.
E)   contact with the relatively cool water.

Question 4

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

Accepted Answer

A)   a high specific heat.
B)   no specific heat.
C)   a low specific heat.

Question 5

When mechanical work is done on a system, there can be an increase in

Accepted Answer

A)   its temperature.
B)   its internal energy.
C)   both temperature and internal energy.
D)   neither temperature or internal energy.

Question 6

Before ice can form on a lake, all the water in the lake must be cooled to

Accepted Answer

A)   4 degrees C.
B)   minus 32 degrees C.
C)   zero degrees C.
D)   None of the above are true. Ice can form at the surface regardless of the water temperature below.

Question 7

The fact that a thermometer "takes its own temperature" illustrates

Accepted Answer

A)   energy conservation.
B)   the difference between heat and internal energy.
C)   the fact that molecules are constantly moving.
D)   thermal equilibrium.

Question 8

Entropy measures

Accepted Answer

A)   messiness.
B)   temperature at constant pressure.
C)   temperature at constant volume.
D)   temperature as pressure increases.
E)   temperature as volume increases.

Question 9

Which of the following contracts most when the temperature is decreased? Equal volumes of

Accepted Answer

A)   water.
B)   helium.
C)   wood.
D)   iron.
E)   All contract the same.

Question 10

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

Accepted Answer

A)   mass.
B)   temperature.
C)   pressure.
D)   all of these.
E)   two of these.

Question 11

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is

Accepted Answer

A)   copper expands more than iron.
B)   copper gets hotter before iron.
C)   iron expands more than copper.
D)   iron gets hotter before copper.
E)   none of these

Question 12

To wholly convert a given amount of heat energy into mechanical energy is

Accepted Answer

A)   possible using an atomic reactor.
B)   possible using a simple machine.
C)   possible using a steam engine.
D)   impossible regardless of the technique used.

Question 13

Suppose you rapidly stir some raw eggs with an eggbeater. The temperature of the eggs will

Accepted Answer

A)   increase.
B)   remain unchanged.
C)   decrease.

Question 14

When ice floats in water, a small part of it extends above the surface. Interestingly enough, the volume of ice that extends above the surface is equal to the volume of the

Accepted Answer

A)   vast number of open spaces in the hexagonal ice crystals.
B)   water the ice displaces.
C)   both of these
D)   neither of these

Question 15

When water at 4 degrees C is heated it expands. When water at 4 degrees C is cooled, it

Accepted Answer

A)   expands.
B)   contracts.
C)   neither contracts nor expands.

Question 16

During a very cold winter, water pipes sometimes burst. The reason for this is

Accepted Answer

A)   water contracts when freezing.
B)   the thawing process releases pressure on the pipes.
C)   the ground contracts when colder, pulling pipes apart.
D)   water expands when freezing.
E)   none of these

Question 17

Suppose the temperature of the input reservoir in a heat engine doesn't change. As the sink temperature is lowered, the efficiency of the engine

Accepted Answer

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

Question 18

Heat energy travels from an object with a high

Accepted Answer

A)   internal energy to an object with a lower internal energy.
B)   temperature to an object with a lower temperature.
C)   Both of these, for they say essentially say the same thing.
D)   None of the above choices are true.

Question 19

A temperature difference of 10 degrees Celsius is also equal to a temperature difference of 10 on the

Accepted Answer

A)   Kelvin scale.
B)   Fahrenheit scale.
C)   both of these
D)   neither of these

Question 20

Consider a sample of ice at 0 degrees C. If the temperature is decreased, the volume of the ice

Accepted Answer

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

Exam 8: Temperature, Heat, and Thermodynamics

During a very cold winter, water pipes sometimes burst. The reason for this is

Correct AnswerverifiedShow Answer

To wholly convert a given amount of heat energy into mechanical energy is

Correct AnswerverifiedShow Answer

Place a kilogram block of iron at 40 degrees C into a kilogram of water at 20 degrees C and the final temperature of the two becomes

Correct AnswerverifiedShow Answer

Entropy measures

Correct AnswerverifiedShow Answer

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is

Correct AnswerverifiedShow Answer

Before ice can form on a lake, all the water in the lake must be cooled to

Correct AnswerverifiedShow Answer

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

Correct AnswerverifiedShow Answer

A temperature difference of 10 degrees Celsius is also equal to a temperature difference of 10 on the

Correct AnswerverifiedShow Answer

Suppose you rapidly stir some raw eggs with an eggbeater. The temperature of the eggs will

Correct AnswerverifiedShow Answer

When mechanical work is done on a system, there can be an increase in

Correct AnswerverifiedShow Answer

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

Correct AnswerverifiedShow Answer

Consider a sample of ice at 0 degrees C. If the temperature is decreased, the volume of the ice

Correct AnswerverifiedShow Answer

When ice floats in water, a small part of it extends above the surface. Interestingly enough, the volume of ice that extends above the surface is equal to the volume of the

Correct AnswerverifiedShow Answer

Consider a steaming aluminum soda-pop can that contains a small amount of boiling water. When it is quickly inverted into a bath of cooler water the can is dramatically crushed by atmospheric pressure. This occurs because the pressure inside the can is rapidly reduced by

Correct AnswerverifiedShow Answer

The fact that a thermometer "takes its own temperature" illustrates

Correct AnswerverifiedShow Answer

Heat energy travels from an object with a high

Correct AnswerverifiedShow Answer

Which of the following contracts most when the temperature is decreased? Equal volumes of

Correct AnswerverifiedShow Answer

When water at 4 degrees C is heated it expands. When water at 4 degrees C is cooled, it

Correct AnswerverifiedShow Answer

Consider a sample of water at 0 degrees C. If the temperature is slightly increased, the volume of the water

Correct AnswerverifiedShow Answer

Suppose the temperature of the input reservoir in a heat engine doesn't change. As the sink temperature is lowered, the efficiency of the engine

Correct AnswerverifiedShow Answer

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