Question 1

When a gas is changed to a liquid, the gas

Accepted Answer

A) releases energy. 
B) absorbs energy. 
C) both of these 
D) neither of these 
A) releases energy. 
B) absorbs energy. 
C) both of these 
D) neither of these

Question 2

For increased atmospheric pressure, the boiling point of water

Accepted Answer

A) goes down. 
B) rises. 
C) remains at 100 degrees C. 
A) goes down. 
B) rises. 
C) remains at 100 degrees C.

Question 3

When water vapor condenses on the inside of a window, the room becomes slightly

Accepted Answer

A) warmer. 
B) cooler. 
C) both of these 
D) neither of these 
A) warmer. 
B) cooler. 
C) both of these 
D) neither of these

Question 4

When a solid is changed to a liquid, the solid

Accepted Answer

A) releases energy. 
B) absorbs energy. 
C) both of these 
D) neither of these 
A) releases energy. 
B) absorbs energy. 
C) both of these 
D) neither of these

Question 5

Stored potatoes, beets, and rutabagas freeze at temperatures below zero degrees Celsius (rather than at exactly zero)because

Accepted Answer

A) they are good radiators of energy. 
B) they are good absorbers of radiant energy. 
C) the water in them contains dissolved salts and sugars. 
D) they are relatively dense. 
E) all of the above 
A) they are good radiators of energy. 
B) they are good absorbers of radiant energy. 
C) the water in them contains dissolved salts and sugars. 
D) they are relatively dense. 
E) all of the above

Question 6

The reason that evaporation is a cooling process is

Accepted Answer

A) radiation of heat during the process. 
B) due to conduction and convection. 
C) the more energetic molecules escape the liquid. 
D) all of the above 
E) none of the above 
A) radiation of heat during the process. 
B) due to conduction and convection. 
C) the more energetic molecules escape the liquid. 
D) all of the above 
E) none of the above

Question 7

When liquids change to a solids, they

Accepted Answer

A) absorb energy. 
B) release energy. 
C) both of these 
D) neither of these 
A) absorb energy. 
B) release energy. 
C) both of these 
D) neither of these

Question 8

Double-pane windows contain nitrogen rather than air to prevent

Accepted Answer

A) gas escape. 
B) thermal conduction. 
C) condensation. 
D) heat flow. 
A) gas escape. 
B) thermal conduction. 
C) condensation. 
D) heat flow.

Question 9

In a heat pump, warming is accomplished when

Accepted Answer

A) condensation occurs in its coils. 
B) vaporization occurs in its coils. 
C) both of these 
D) neither of these 
A) condensation occurs in its coils. 
B) vaporization occurs in its coils. 
C) both of these 
D) neither of these

Question 10

The pressure at the bottom of a geyser is

Accepted Answer

A) less than nearer the top. 
B) the same as nearer the top 
C) greater than nearer the top. 
D) all of the above 
E) none of the above 
A) less than nearer the top. 
B) the same as nearer the top 
C) greater than nearer the top. 
D) all of the above 
E) none of the above

Question 11

When a solid melts, energy is

Accepted Answer

A) absorbed by the solid. 
B) released by the solid. 
C) both of these 
D) neither of these 
A) absorbed by the solid. 
B) released by the solid. 
C) both of these 
D) neither of these

Question 12

Which will melt more ice when placed on its surface, a kilogram of wood or a kilogram of iron of the same high temperature?

Accepted Answer

A) 1 kg of wood. 
B) 1 kg of iron. 
C) both the same 
D) neither of these 
A) 1 kg of wood. 
B) 1 kg of iron. 
C) both the same 
D) neither of these

Question 13

The cooling effect inside a refrigerator is produced by

Accepted Answer

A) an electric motor that converts electrical energy to internal energy. 
B) compressing the refrigeration gas. 
C) vaporizing the refrigeration liquid. 
D) proper insulation. 
E) exchanging warmer air with colder air. 
A) an electric motor that converts electrical energy to internal energy. 
B) compressing the refrigeration gas. 
C) vaporizing the refrigeration liquid. 
D) proper insulation. 
E) exchanging warmer air with colder air.

Question 14

Dean teaches that the phenomenon of regelation is due to the

Accepted Answer

A) freezing point of water. 
B) melting point of ice. 
C) open-structured nature of ice crystals. 
D) high specific heat of water. 
A) freezing point of water. 
B) melting point of ice. 
C) open-structured nature of ice crystals. 
D) high specific heat of water.

Question 15

When condensation occurs inside your bedroom window, the air outside is appreciably

Accepted Answer

A) colder. 
B) warmer. 
C) both of these 
D) neither of these 
A) colder. 
B) warmer. 
C) both of these 
D) neither of these

Question 16

A geyser such as Old Faithful in Yellowstone Park is similar to a

Accepted Answer

A) vacuum bottle. 
B) canteen. 
C) coffee percolator. 
D) teakettle. 
E) vat of molten lead. 
A) vacuum bottle. 
B) canteen. 
C) coffee percolator. 
D) teakettle. 
E) vat of molten lead.

Question 17

On a muggy day, water molecules in the air that strike our bodies

Accepted Answer

A) transfer some of their kinetic energy to us. 
B) gain kinetic energy as they change phase. 
C) form an insulating layer on our bodies. 
A) transfer some of their kinetic energy to us. 
B) gain kinetic energy as they change phase. 
C) form an insulating layer on our bodies.

Question 18

An inventor discovers a harmless and tasteless salt, which when added to water changes its boiling point. The market value for this salt will be better if the salt

Accepted Answer

A) lowers the boiling point of water. 
B) raises the boiling point of water. 
C) either raises or lowers the boiling point, as the food would be cooked either way. 
D) none of the above 
A) lowers the boiling point of water. 
B) raises the boiling point of water. 
C) either raises or lowers the boiling point, as the food would be cooked either way. 
D) none of the above

Question 19

Evaporation is a cooling process and condensation is

Accepted Answer

A) a warming process. 
B) a cooling process also. 
C) neither of these 
A) a warming process. 
B) a cooling process also. 
C) neither of these

Question 20

We feel uncomfortably warm on a muggy day because water molecules are

Accepted Answer

A) evaporating from our moist bodies. 
B) condensing on our bodies. 
C) evaporating and condensing on our bodies at the same rate. 
D) none of the above 
A) evaporating from our moist bodies. 
B) condensing on our bodies. 
C) evaporating and condensing on our bodies at the same rate. 
D) none of the above

Exam 17: Change of Phase

When a gas is changed to a liquid, the gas

For increased atmospheric pressure, the boiling point of water

When water vapor condenses on the inside of a window, the room becomes slightly

When a solid is changed to a liquid, the solid

Stored potatoes, beets, and rutabagas freeze at temperatures below zero degrees Celsius (rather than at exactly zero)because

The reason that evaporation is a cooling process is

When liquids change to a solids, they

Double-pane windows contain nitrogen rather than air to prevent

In a heat pump, warming is accomplished when

The pressure at the bottom of a geyser is

When a solid melts, energy is

Which will melt more ice when placed on its surface, a kilogram of wood or a kilogram of iron of the same high temperature?

The cooling effect inside a refrigerator is produced by

Dean teaches that the phenomenon of regelation is due to the

When condensation occurs inside your bedroom window, the air outside is appreciably

A geyser such as Old Faithful in Yellowstone Park is similar to a

On a muggy day, water molecules in the air that strike our bodies

An inventor discovers a harmless and tasteless salt, which when added to water changes its boiling point. The market value for this salt will be better if the salt

Evaporation is a cooling process and condensation is

We feel uncomfortably warm on a muggy day because water molecules are

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion

Newtons Third Law of Motion: Action and Reaction

Momentum

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Atomic Nature of Matter

Solids

Liquids

Gases and Plasmas

Temperature, Heat, and Expansion

Heat Transfer

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Electric Current

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Emission

Light Quanta

The Atom and the Quantum

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Systems of Measurement

Filters