Question 1

Suppose you want to save energy and you're going to leave your cool house for a half hour on a hot day.You should turn the temperature setting on the air conditioner

Accepted Answer

A) down a little. 
B) up a little. 
C) off altogether. 
D) to room temperature. 
A) down a little. 
B) up a little. 
C) off altogether. 
D) to room temperature. C

Question 2

Your feet feel warmer on a rug than on a tile floor because a rug

Accepted Answer

A) is usually warmer than tile. 
B) is a better insulator than tile. 
C) for the same mass has more internal energy than tile. 
D) all of these 
E) none of these 
A) is usually warmer than tile. 
B) is a better insulator than tile. 
C) for the same mass has more internal energy than tile. 
D) all of these 
E) none of these B

Question 3

Both black and white road surfaces radiate energy.At the end of a starry night the warmer road surface will be

Accepted Answer

A) the black surface. 
B) the white surface. 
C) Neither - there is no difference. 
A) the black surface. 
B) the white surface. 
C) Neither - there is no difference. B

Question 4

Waves emitted by the sun and terrestrial wave emissions are

Accepted Answer

A) the same except for their frequencies and wavelengths. 
B) entirely different kinds of waves. 
C) identical. 
A) the same except for their frequencies and wavelengths. 
B) entirely different kinds of waves. 
C) identical.

Question 5

Warm air rises because faster-moving molecules tend to move to regions of less

Accepted Answer

A) density and less pressure. 
B) pressure. 
C) density. 
A) density and less pressure. 
B) pressure. 
C) density.

Question 6

A liter of hot water will cool to room temperature faster in a

Accepted Answer

A) black pot. 
B) silver pot. 
C) red pot. 
D) depends more on the size of the pot than its color 
A) black pot. 
B) silver pot. 
C) red pot. 
D) depends more on the size of the pot than its color

Question 7

Use the following figure to answer the question:  
-A water-filled paper cup held in a flame will not catch fire.This is because

Accepted Answer

A) the inside of the paper is wet. 
B) water is an excellent conductor of heat. 
C) paper is a poor conductor of heat. 
D) the paper cup cannot become appreciably hotter than the water it contains. 
A) the inside of the paper is wet. 
B) water is an excellent conductor of heat. 
C) paper is a poor conductor of heat. 
D) the paper cup cannot become appreciably hotter than the water it contains.

Question 8

If air were a better conductor than it is,at nighttime the Earth would be

Accepted Answer

A) considerably colder. 
B) considerably warmer. 
C) not appreciably different in temperature. 
A) considerably colder. 
B) considerably warmer. 
C) not appreciably different in temperature.

Question 9

Hydrogen and oxygen molecules in a gas sample have the same temperature.This means the hydrogen molecules,on the average,have the same

Accepted Answer

A) speed and the same kinetic energy. 
B) speed,but more kinetic energy. 
C) speed,but less kinetic energy. 
D) kinetic energy,but more speed. 
E) kinetic energy,but less speed. 
A) speed and the same kinetic energy. 
B) speed,but more kinetic energy. 
C) speed,but less kinetic energy. 
D) kinetic energy,but more speed. 
E) kinetic energy,but less speed.

Question 10

When a volume of air is compressed,its temperature

Accepted Answer

A) increases. 
B) decreases. 
C) neither increases nor decreases. 
A) increases. 
B) decreases. 
C) neither increases nor decreases.

Question 11

Objects that radiate relatively well

Accepted Answer

A) absorb radiation relatively well. 
B) reflect radiation relatively well. 
C) both of these 
D) neither of these 
A) absorb radiation relatively well. 
B) reflect radiation relatively well. 
C) both of these 
D) neither of these

Question 12

Double the absolute temperature of helium gas and the average speed of its molecules

Accepted Answer

A) less than doubles. 
B) doubles. 
C) more than doubles. 
A) less than doubles. 
B) doubles. 
C) more than doubles.

Question 13

Use the following figure to answer the question:   
-A Thermos bottle has double glass walls with silver coating on the glass surfaces that face one another.The silver coating reduces the energy that is transferred by

Accepted Answer

A) conduction. 
B) convection. 
C) radiation. 
D) friction. 
E) none of these 
A) conduction. 
B) convection. 
C) radiation. 
D) friction. 
E) none of these

Question 14

Newton's law of cooling applies to objects that are

Accepted Answer

A) cooling. 
B) heating. 
C) both of these 
D) none of these 
A) cooling. 
B) heating. 
C) both of these 
D) none of these

Question 15

If molecules in a gas sample moved so they completely missed each other,the gas's temperature would

Accepted Answer

A) increase. 
B) decrease. 
C) stay the same. 
A) increase. 
B) decrease. 
C) stay the same.

Question 16

At the same temperature,which move with the greater speed in the air?

Accepted Answer

A) very light molecules 
B) heavier molecules 
C) All will have equal average speeds. 
A) very light molecules 
B) heavier molecules 
C) All will have equal average speeds.

Question 17

An object will normally be a net radiator of energy when its temperature is

Accepted Answer

A) higher than its surroundings. 
B) lower than its surroundings. 
C) neither of these 
A) higher than its surroundings. 
B) lower than its surroundings. 
C) neither of these

Question 18

The higher the temperature of an object

Accepted Answer

A) the longer the wavelengths it radiates. 
B) the shorter the wavelengths it radiates. 
C) makes no difference in the wavelengths it radiates 
A) the longer the wavelengths it radiates. 
B) the shorter the wavelengths it radiates. 
C) makes no difference in the wavelengths it radiates

Question 19

Which body glows with electromagnetic waves?

Accepted Answer

A) both the Sun and the Earth 
B) only the Sun 
C) only the Earth 
D) neither the Sun or the Earth 
A) both the Sun and the Earth 
B) only the Sun 
C) only the Earth 
D) neither the Sun or the Earth

Question 20

A good absorber of radiation is a

Accepted Answer

A) good emitter of radiation. 
B) poor emitter of radiation. 
C) good reflector. 
D) none of these 
A) good emitter of radiation. 
B) poor emitter of radiation. 
C) good reflector. 
D) none of these

Exam 16: Heat Transfer

Suppose you want to save energy and you're going to leave your cool house for a half hour on a hot day.You should turn the temperature setting on the air conditioner

Your feet feel warmer on a rug than on a tile floor because a rug

Both black and white road surfaces radiate energy.At the end of a starry night the warmer road surface will be

Waves emitted by the sun and terrestrial wave emissions are

Warm air rises because faster-moving molecules tend to move to regions of less

A liter of hot water will cool to room temperature faster in a

Use the following figure to answer the question: -A water-filled paper cup held in a flame will not catch fire.This is because

If air were a better conductor than it is,at nighttime the Earth would be

Hydrogen and oxygen molecules in a gas sample have the same temperature.This means the hydrogen molecules,on the average,have the same

When a volume of air is compressed,its temperature

Objects that radiate relatively well

Double the absolute temperature of helium gas and the average speed of its molecules

Use the following figure to answer the question: -A Thermos bottle has double glass walls with silver coating on the glass surfaces that face one another.The silver coating reduces the energy that is transferred by

Newton's law of cooling applies to objects that are

If molecules in a gas sample moved so they completely missed each other,the gas's temperature would

At the same temperature,which move with the greater speed in the air?

An object will normally be a net radiator of energy when its temperature is

The higher the temperature of an object

Which body glows with electromagnetic waves?

A good absorber of radiation is a

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

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

Change of Phase

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

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