Deck 15: Temperature,heat,and Expansion

Question 1

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

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

Answer 1

helium.

Question 2

If glass expanded more than mercury,then the column of mercury in a mercury thermometer would rise when the temperature

A)increases.
B)decreases.
C)neither of these

Answer 2

decreases.

Question 3

Heat energy travels from an object with a high

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.

Answer 3

temperature to an object with a lower temperature.

Question 4

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

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

Question 5

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

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

Question 6

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

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

Question 7

When an iron ring is heated,the hole becomes

A)smaller.
B)larger.
C)neither smaller nor larger.
D)either smaller or larger,depending on the ring thickness.

Question 8

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

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

Question 9

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

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 10

Ice tends to form first at the

A)surface of bodies of water.
B)bottom of bodies of water.
C)surface or bottom depending on the water depth.

Question 11

As a piece of metal with a hole in it cools,the diameter of the hole

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

Question 12

Microscopic slush in water tends to make the water density

A)greater.
B)less.
C)no change

Question 13

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

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 14

The moderate temperatures of islands throughout the world has much to do with water's

A)poor conductivity.
B)vast supply of internal energy.
C)high specific heat.
D)high evaporation rate.
E)absorption of solar energy.

Question 15

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

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

Question 16

A substance that heats up relatively quickly has a

A)high specific heat.
B)low specific heat.
C)high conductivity.
D)low conductivity.

Question 17

Heat energy is measured in units of

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

Question 18

Ice has a lower density than water because ice

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 19

When you touch a cold piece of ice with your finger,energy flows

A)from your finger to the ice.
B)from the ice to your finger.
C)actually,both ways.

Question 20

Which of the following normally warms up fastest when heat is applied?

A)water
B)iron
C)glass
D)wood
E)All of the above choices are equally true.

Question 21

Aluminum has a specific heat capacity more than twice that of copper.Place equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperature will be

A)copper.
B)aluminum.
C)both the same

Question 22

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

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

Question 23

The white-hot sparks that strike your skin from a 4th-of-July-type sparkler don't harm you because

A)they have a low temperature.
B)the energy per molecule is very low.
C)the energy per molecule is high,but little energy is transferred because of the few molecules in the spark.

Question 24

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

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

Question 25

If the specific heat of water were lower than it is,ponds in the cold of winter would be

A)more likely to freeze.
B)less likely to freeze.
C)neither more nor less likely to freeze.

Question 26

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

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 27

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

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

Question 28

Between 0 degrees Celsius and 8 degrees Celsius a red-dyed-water-in-glass thermometer would

A)be especially suitable.
B)always be wrong.
C)give ambiguous readings.
D)explode.
E)implode.

Question 29

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

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

Question 30

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

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

Question 31

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

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

Question 32

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

A)sometimes
B)always
C)never

Question 33

On a very hot day the pendulum on a clock swings to and fro

A)more frequently.
B)less frequently.
C)at the same rate.

Question 34

Room temperature on the Kelvin scale is about

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

Question 35

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

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

Question 36

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

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

Question 37

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

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

Question 38

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

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

Question 39

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

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

Question 40

The temperature at the bottom of Lake Tahoe,high in the Sierra Nevada Mountains in California,at this moment is

A)below 4 degrees C.
B)4 degrees C.
C)above 4 degrees C.
D)uncertain.

Question 41

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

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

Question 42

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

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

Question 43

Use the following figure to answer the question:
Consider a metal ring with a gap cut in it.When the ring is heated,the gap

A)becomes narrower.
B)becomes wider.
C)retains its size.