Question 1

Ice has a lower density than water because ice

Accepted Answer

A)  sinks.
B)  molecules are more compact in the solid state.
C)  molecules vibrate at lower rates than water molecules.
D)  is made of open-structured,hexagonal crystals.
E)  density decreases with decreasing temperature.

Question 2

Compared to a giant iceberg,a hot cup of coffee has

Accepted Answer

A)  more internal energy and higher temperature.
B)  higher temperature,but less internal energy.
C)  a greater specific heat and more internal energy.
D)  none of these

Question 3

When we enlarge a photograph of an iron ring,the image of the hole becomes

Accepted Answer

A)  smaller.
B)  larger.
C)  neither smaller nor larger.

Question 4

If you measure a plot of land with a brass tape on a cold day,the actual amount of land you have will be

Accepted Answer

A)  smaller than measured.
B)  larger than measured.
C)  the same.

Question 5

Can a sample of water possibly have the same volume after being warmed by several Celsius degrees?

Accepted Answer

A)  sometimes
B)  always
C)  never

Question 6

Which of the following expands when the temperature is lowered? Equal volumes of

Accepted Answer

A)  iron.
B)  wood.
C)  helium.
D)  water at 4 degrees C.
E)  None expands when the temperature is lowered.

Question 7

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

Accepted Answer

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

Question 8

Room temperature on the Kelvin scale is about

Accepted Answer

A)  100 K.
B)  200 K.
C)  300 K.
D)  400 K.
E)  more than 400 K.

Question 9

If you stake out a plot of land with a steel tape on a very hot day,the actual amount of land you will have will be

Accepted Answer

A)  smaller than measured.
B)  larger than measured.
C)  correct.

Question 10

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

Accepted Answer

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

Question 11

Heat energy is measured in units of

Accepted Answer

A)  joules.
B)  calories.
C)  Choices A and B are both true.
D)  Choices A and B are both false.

Question 12

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

Question 13

Some molecules are able to absorb large amounts of energy in the form of internal vibrations and rotations.Materials composed of such molecules have

Accepted Answer

A)  low specific heats.
B)  high specific heats.
C)  none of the above

Question 14

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 15

Pour a liter of water at 40 degrees C into a liter of water at 20 degrees C and the final temperature of the two becomes

Accepted Answer

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

Question 16

Which of the following expands most when the temperature is increased? Equal volumes of

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

Which of the following contracts when the temperature is increased? Equal volumes of

Accepted Answer

A)  iron.
B)  wood.
C)  ice water.
D)  helium.
E)  None of the above contract when heated.

Exam 15: Temperature,heat,and Expansion

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

Correct AnswerverifiedShow Answer

Some molecules are able to absorb large amounts of energy in the form of internal vibrations and rotations.Materials composed of such molecules have

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

Heat energy travels from an object with a high

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Room temperature on the Kelvin scale is about

Correct AnswerverifiedShow Answer

Pour a liter of water at 40 degrees C into a liter of water at 20 degrees C and the final temperature of the two becomes

Correct AnswerverifiedShow Answer

Which of the following expands most when the temperature is increased? Equal volumes of

Correct AnswerverifiedShow Answer

Can a sample of water possibly have the same volume after being warmed by several Celsius degrees?

Correct AnswerverifiedShow Answer

If you stake out a plot of land with a steel tape on a very hot day,the actual amount of land you will have will be

Correct AnswerverifiedShow Answer

Heat energy is measured in units 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

When we enlarge a photograph of an iron ring,the image of the hole becomes

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 a thermometer "takes its own temperature" illustrates

Correct AnswerverifiedShow Answer

Ice has a lower density than water because ice

Correct AnswerverifiedShow Answer

Compared to a giant iceberg,a hot cup of coffee has

Correct AnswerverifiedShow Answer

Which of the following contracts when the temperature is increased? Equal volumes of

Correct AnswerverifiedShow Answer

Which of the following expands when the temperature is lowered? Equal volumes of

Correct AnswerverifiedShow Answer

If you measure a plot of land with a brass tape on a cold day,the actual amount of land you have will be

Correct AnswerverifiedShow Answer

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