Question 1

When you touch a hot penny in the sunlight with your finger,energy flows

Accepted Answer

A) from your finger to the penny. 
B) from the penny to your finger. 
C) both ways. 
A) from your finger to the penny. 
B) from the penny to your finger. 
C) both ways.

Question 2

White-hot sparks from a fireworks sparkler that strike your skin don't cause injury because

Accepted Answer

A) they have a low temperature. 
B) the energy per molecule is very low. 
C) the energy per molecule is high,but the total energy transferred is small. 
A) they have a low temperature. 
B) the energy per molecule is very low. 
C) the energy per molecule is high,but the total energy transferred is small.

Question 3

When you place a sealed can of air on a hot stove,air in the can undergoes an increase in

Accepted Answer

A) thermal energy. 
B) temperature. 
C) pressure. 
D) all of the above 
E) none of the above 
A) thermal energy. 
B) temperature. 
C) pressure. 
D) all of the above 
E) none of the above

Question 4

Explain why fish are able to survive through cold winters even when the ponds are frozen over.

Accepted Answer

Water has its greatest density at 4°C.So

Question 5

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

Accepted Answer

A) water the ice displaces. 
B) vast number of open spaces in the hexagonal ice crystals. 
C) both of these 
D) none of the above 
A) water the ice displaces. 
B) vast number of open spaces in the hexagonal ice crystals. 
C) both of these 
D) none of the above

Question 6

A substance that heats up relatively quickly has a

Accepted Answer

A) high specific heat capacity. 
B) low specific heat capacity. 
C) high or low specific heat capacity. 
A) high specific heat capacity. 
B) low specific heat capacity. 
C) high or low specific heat capacity.

Question 7

Helium gas has the special property that its thermal energy is directly proportional to its Kelvin temperature.Consider a flask of helium with a temperature of 10°C.If it is heated until it has twice as much thermal energy,show that its temperature is 293°C.Why would doubling the thermal energy of a flask of 10°C water not produce the same temperature?

Accepted Answer

Thermal energy changes are directly prop

Question 8

Water at 4°C will sink to the bottom of a pond because

Accepted Answer

A) it will not freeze there. 
B) it benefits fish and other life forms there. 
C) like a rock,it is denser than surrounding water. 
D) of the presence of microscopic ice crystals. 
A) it will not freeze there. 
B) it benefits fish and other life forms there. 
C) like a rock,it is denser than surrounding water. 
D) of the presence of microscopic ice crystals.

Question 9

Materials composed of molecules that absorb large amounts of energy in the form of vibrations and rotations have

Accepted Answer

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

Question 10

During a very cold winter,water pipes sometimes burst because

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

Question 11

Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems?

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 12

When Paul compresses air with a tire pump,the temperature of the compressed air

Accepted Answer

A) drops. 
B) remains unchanged. 
C) increases as work is done on it. 
D) none of the above 
A) drops. 
B) remains unchanged. 
C) increases as work is done on it. 
D) none of the above

Question 13

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

Question 14

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

Question 15

The number of joules in 1 kilocalorie is

Accepted Answer

A) 4.19. 
B) 41.9. 
C) 4190. 
D) 1054. 
A) 4.19. 
B) 41.9. 
C) 4190. 
D) 1054.

Question 16

The operation of a bimetallic strip relies on 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 17

If a room is cold it is usually due to the

Accepted Answer

A) lack of adequate thermal energy. 
B) low air pressure. 
C) presence of the entity known as cold. 
A) lack of adequate thermal energy. 
B) low air pressure. 
C) presence of the entity known as cold.

Question 18

Which will cool faster when removed from a furnace?

Accepted Answer

A) iron 
B) silver 
C) the same 
A) iron 
B) silver 
C) the same

Question 19

The temperature of melting ice is

Accepted Answer

A) 0°C. 
B) 32°F. 
C) both of these 
A) 0°C. 
B) 32°F. 
C) both of these

Question 20

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

Accepted Answer

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

Exam 6: Thermal Energy and Thermodynamics

When you touch a hot penny in the sunlight with your finger,energy flows

White-hot sparks from a fireworks sparkler that strike your skin don't cause injury because

When you place a sealed can of air on a hot stove,air in the can undergoes an increase in

Explain why fish are able to survive through cold winters even when the ponds are frozen over.

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

A substance that heats up relatively quickly has a

Water at 4°C will sink to the bottom of a pond because

Materials composed of molecules that absorb large amounts of energy in the form of vibrations and rotations have

During a very cold winter,water pipes sometimes burst because

Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems?

When Paul compresses air with a tire pump,the temperature of the compressed air

Ice has a lower density than water because ice

Room temperature on the Kelvin scale is about

The number of joules in 1 kilocalorie is

The operation of a bimetallic strip relies on differences in

If a room is cold it is usually due to the

Which will cool faster when removed from a furnace?

The temperature of melting ice is

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

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 Time - Reading 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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