Question 1

Place a 1-kg iron block at 40°C into 1 kg of water at 20°C and the final temperature becomes

Accepted Answer

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

Question 2

A volume of helium gas has a temperature of 10°C. The same gas twice as hot has a temperature of

Accepted Answer

A) 10°C. 
B) 12°C. 
C) 283°C. 
D) 293°C. 
E) none of the above 
A) 10°C. 
B) 12°C. 
C) 283°C. 
D) 293°C. 
E) none of the above D

Question 3

Consider a sample of water at 20°C. If the temperature is slightly increased, the water

Accepted Answer

A) expands. 
B) contracts. 
C) remains the same. 
A) expands. 
B) contracts. 
C) remains the same. A

Question 4

The greatest expansion of water occurs when

Accepted Answer

A) it turns to ice. 
B) at 4°C it gains temperature. 
C) at 4°C it loses temperature. 
D) none of the above 
A) it turns to ice. 
B) at 4°C it gains temperature. 
C) at 4°C it loses temperature. 
D) none of the above

Question 5

The usefulness of a bimetallic strip is due to differences in

Accepted Answer

A) expansions of metals. 
B) conductivities of metals. 
C) heat capacities of metals. 
A) expansions of metals. 
B) conductivities of metals. 
C) heat capacities of metals.

Question 6

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

Accepted Answer

A) more thermal energy and higher temperature. 
B) higher temperature, but less thermal energy. 
C) a greater specific heat capacity and more thermal energy. 
D) none of the above 
A) more thermal energy and higher temperature. 
B) higher temperature, but less thermal energy. 
C) a greater specific heat capacity and more thermal energy. 
D) none of the above

Question 7

The filling of a hot apple pie is hotter than the crust due to

Accepted Answer

A) water in the filling that better retains thermal energy. 
B) uneven temperatures. 
C) high conductivity of apples. 
A) water in the filling that better retains thermal energy. 
B) uneven temperatures. 
C) high conductivity of apples.

Question 8

Thermal energy can be measured in

Accepted Answer

A) calories. 
B) Calories. 
C) joules. 
D) any or all of the above for special cases 
A) calories. 
B) Calories. 
C) joules. 
D) any or all of the above for special cases

Question 9

If the temperature of a sample of 4°C water slightly increases, the sample of water

Accepted Answer

A) contracts. 
B) expands. 
C) neither 
A) contracts. 
B) expands. 
C) neither

Question 10

Heat is thermal energy that flows due to

Accepted Answer

A) molecular activity. 
B) calorie imbalance. 
C) temperature differences. 
A) molecular activity. 
B) calorie imbalance. 
C) temperature differences.

Question 11

What would be the temperature of 50 g of 20°C water mixed with 80 g of 40°C water?

Accepted Answer

A) 24.6°C 
B) 26.9°C 
C) 27.6°C 
D) 28.3°C 
A) 24.6°C 
B) 26.9°C 
C) 27.6°C 
D) 28.3°C

Question 12

As a hot iron ring cools, the diameter of the hole

Accepted Answer

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

Question 13

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

Accepted Answer

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

Question 14

When a bimetallic bar composed of copper and iron strips is heated, the bar bends toward the iron strip because

Accepted Answer

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 the above 
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 the above

Question 15

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

Accepted Answer

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

Question 16

For each degree a volume of air at 0°C is cooled, its pressure

Accepted Answer

A) decreases by 1/273. 
B) decreases by 100/273. 
C) increases by 1/273. 
D) increases by 100/273. 
A) decreases by 1/273. 
B) decreases by 100/273. 
C) increases by 1/273. 
D) increases by 100/273.

Question 17

As entropy in a system increases, energy within the system

Accepted Answer

A) becomes more ordered. 
B) becomes less ordered. 
C) reaches equilibrium. 
D) moves toward destruction. 
A) becomes more ordered. 
B) becomes less ordered. 
C) reaches equilibrium. 
D) moves toward destruction.

Question 18

When an iron ring is heated, the hole becomes

Accepted Answer

A) smaller. 
B) larger. 
C) neither 
A) smaller. 
B) larger. 
C) neither

Question 19

Which law of thermodynamics addresses the direction of heat flow?

Accepted Answer

A) first law 
B) second law 
C) third law 
D) all of the above 
A) first law 
B) second law 
C) third law 
D) all of the above

Question 20

Your room gets messier day by day. In this case entropy is

Accepted Answer

A) increasing. 
B) decreasing. 
C) hanging steady. 
D) none of the above 
A) increasing. 
B) decreasing. 
C) hanging steady. 
D) none of the above

Exam 6: Thermal Energy and Thermodynamics

Place a 1-kg iron block at 40°C into 1 kg of water at 20°C and the final temperature becomes

A volume of helium gas has a temperature of 10°C. The same gas twice as hot has a temperature of

Consider a sample of water at 20°C. If the temperature is slightly increased, the water

The greatest expansion of water occurs when

The usefulness of a bimetallic strip is due to differences in

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

The filling of a hot apple pie is hotter than the crust due to

Thermal energy can be measured in

If the temperature of a sample of 4°C water slightly increases, the sample of water

Heat is thermal energy that flows due to

What would be the temperature of 50 g of 20°C water mixed with 80 g of 40°C water?

As a hot iron ring cools, the diameter of the hole

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

When a bimetallic bar composed of copper and iron strips is heated, the bar bends toward the iron strip because

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

For each degree a volume of air at 0°C is cooled, its pressure

As entropy in a system increases, energy within the system

When an iron ring is heated, the hole becomes

Which law of thermodynamics addresses the direction of heat flow?

Your room gets messier day by day. In this case entropy is

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

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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