Question 1

Which object is hotter?

Accepted Answer

A)   Object 1 at T = 0 °\degree°  C
B)   Object 2 at T = 0 °\degree°  F
C)   Object 3 at T = 0 K.  A

Question 2

An ice cube is floating in a glass of water with the water level just reaching the top of the glass. If the temperature in the surrounding area is above freezing, the ice cube will melt. When it does,

Accepted Answer

A)   water will begin to spill over the top of the glass.
B)   the water level in the glass will remain unchanged as the ice continues to melt.
C)   the water level in the glass will begin to go down.
D)   it is impossible to tell what the water level will do from the information given.

Question 3

On a cold day, a metal fence post feels colder to the touch than a tree. This sensation of different temperatures is explained by the fact that

Accepted Answer

A)   the temperature of the tree is higher.
B)   the specific heat capacity of the metal is higher.
C)   the specific heat capacity of the wood in the tree is higher.
D)   the thermal conductivity of the metal is higher.
E)   the thermal conductivity of the wood in the tree is higher.

Question 4

Compare the internal energy of one gram of steam to that of one gram of water if both are at 100 °\degree° C.

Accepted Answer

A)   The internal energy of the steam will be higher.
B)   The internal energy of the water and steam are the same.
C)   The internal energy of the water will be higher.

Question 5

The temperature of 100 g of water is to be raised from 10 °\degree° C to 90 °\degree° C. The energy needed to do this is about

Accepted Answer

A)   1 ×	imes×  103 cal.
B)   5 ×	imes×  103 cal.
C)   6 ×	imes×  103 cal.
D)   8 ×	imes×  103 cal.
E)   5.4 ×	imes×  104 cal.

Question 6

When the temperature of the air in a balloon is raised, the volume of the balloon

Accepted Answer

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

Question 7

Two identical objects, one light colored and the other dark colored, are at the same elevated temperature, 50 °\degree° C. You now place them in a dark, much cooler room. Which object will reach the room's temperature first?

Accepted Answer

A)   The light colored object
B)   The dark colored object
C)   Both reach room temperature at same time.
D)   As strange as it seems, neither object will ever reach room temperature because energy conservation prevents the loss of energy.

Question 8

The temperature of a sample of a substance is a way to gauge

Accepted Answer

A)   the average momentum of the fastest 50% of the molecules in the sample.
B)   the kinetic energy of the fastest moving molecule in the sample.
C)   the average momentum of the molecules in a sample.
D)   the average kinetic energy of the molecules in that sample.

Question 9

When you apply an alcohol swab to your skin, it feels cool because

Accepted Answer

A)   your skin transfers a bit of heat to the liquid alcohol and the alcohol evaporates.
B)   the density of alcohol is less than 1 g per cm3.
C)   germs are destroyed by the alcohol, and they give off cold heat as they die.
D)   of nothing-it is an illusion, because evaporating alcohol is actually hotter than liquid alcohol.

Question 10

The air at the beach is the same temperature everywhere, but you feel cooler under a beach umbrella because

Accepted Answer

A)   the sand underneath you cools off more rapidly than the water vapor in the air.
B)   the umbrella gets hot, which thereby cools off the air underneath it.
C)   solar radiation is not heating up your skin.
D)   a convection cell forms under the umbrella, thereby cooling you off. C

Question 11

You lose your left sandal during a hot afternoon at the beach. Thus, you must hike back to your vehicle with one bare foot across the burning sand. Why does the bare foot get so much hotter?

Accepted Answer

A)   The sandal insulates the right foot from the hot sand.
B)   The sandal conducts heat away from your right foot and into the sand.
C)   The sandal is in the shadow of your foot, but the sand is not.
D)   Heat flows from your right foot into your left foot and then out into the sand, thus cooling off your right foot. A

Question 12

Water freezes at 273 on the ________ scale.

Accepted Answer

A)   Fahrenheit
B)   Celsius
C)   Rankin
D)   Kelvin
E)   Vernier

Question 13

Thermal-electric solar power stations typically experience fluctuations in available sunlight throughout the day, but can use ______________________ to smooth out electrical power levels to their customers.

Accepted Answer

phase-change materia...

Question 14

Heat will not be transferred between two bodies that are at the same ____________________.

Accepted Answer

The answer of Heat will not be transferred between two...

Question 15

When water boils, the primary form of heat flow in the water is ____________(conduction, convection, radiation).

Accepted Answer

The answer of When water boils, the primary form of...

Question 16

Which of the following temperatures is the lowest?

Accepted Answer

A)   0 °\degree° C.
B)   0 °\degree° F.
C)   263 K.
D)   All are the same.

Question 17

During the course of a demonstration the professor is called away. When he returns he finds a beaker of water that was at room temperature is now at a slightly higher temperature. There is a stirring rod on the desk and a cigarette lighter. The professor can assume that the temperature increase is due to

Accepted Answer

A)   heat added to the system.
B)   mechanical work done on the system.
C)   either heat added or mechanical work done.

Question 18

The transfer of heat from a furnace to the house through ducts is by the process of _________________.

Accepted Answer

The answer of The transfer of heat from a furnace...

Question 19

The lowest possible temperature a body can approach is called

Accepted Answer

A)   "mighty" cold.
B)   absolute zero.
C)   triple point.
D)   critical temperature.
E)   triple absolute zero.

Question 20

On a cold winter's morning you awake and step out of bed. One foot is on the tile floor and the other is on a rug on the floor. Which statement is true?

Accepted Answer

A)   The tile feels colder because it is smoother than the rug.
B)   The tile feels colder because it is connected to the cold ground outside.
C)   The tile feels colder because it conducts heat more rapidly away from your foot.
D)   The tile feels colder because it cannot absorb water like the rug can.

Exam 10: Temperature and Heat

Which object is hotter?

Correct Answer
verified
A

An ice cube is floating in a glass of water with the water level just reaching the top of the glass. If the temperature in the surrounding area is above freezing, the ice cube will melt. When it does,

Correct Answer
verified

On a cold day, a metal fence post feels colder to the touch than a tree. This sensation of different temperatures is explained by the fact that

Correct Answer
verified

Compare the internal energy of one gram of steam to that of one gram of water if both are at 100 $\degree$ C.

Correct Answer
verified

The temperature of 100 g of water is to be raised from 10 $\degree$ C to 90 $\degree$ C. The energy needed to do this is about

Correct Answer
verified

When the temperature of the air in a balloon is raised, the volume of the balloon

Correct Answer
verified

Two identical objects, one light colored and the other dark colored, are at the same elevated temperature, 50 $\degree$ C. You now place them in a dark, much cooler room. Which object will reach the room's temperature first?

Correct Answer
verified

The temperature of a sample of a substance is a way to gauge

Correct Answer
verified

When you apply an alcohol swab to your skin, it feels cool because

Correct Answer
verified

The air at the beach is the same temperature everywhere, but you feel cooler under a beach umbrella because

Correct Answer
verified
C

You lose your left sandal during a hot afternoon at the beach. Thus, you must hike back to your vehicle with one bare foot across the burning sand. Why does the bare foot get so much hotter?

Correct Answer
verified
A

Water freezes at 273 on the ________ scale.

Correct Answer
verified

Thermal-electric solar power stations typically experience fluctuations in available sunlight throughout the day, but can use ______________________ to smooth out electrical power levels to their customers.

Correct Answer
verified
phase-change materia...
View Answer

Heat will not be transferred between two bodies that are at the same ____________________.

Correct Answer
verified

When water boils, the primary form of heat flow in the water is ____________(conduction, convection, radiation).

Correct Answer
verified

Which of the following temperatures is the lowest?

Correct Answer
verified

Correct Answer
verified

The transfer of heat from a furnace to the house through ducts is by the process of _________________.

Correct Answer
verified

The lowest possible temperature a body can approach is called

Correct Answer
verified

On a cold winter's morning you awake and step out of bed. One foot is on the tile floor and the other is on a rug on the floor. Which statement is true?

Correct Answer
verified

Exam 10: Temperature and Heat

Which object is hotter?

Correct AnswerverifiedA

An ice cube is floating in a glass of water with the water level just reaching the top of the glass. If the temperature in the surrounding area is above freezing, the ice cube will melt. When it does,

Correct AnswerverifiedShow Answer

On a cold day, a metal fence post feels colder to the touch than a tree. This sensation of different temperatures is explained by the fact that

Correct AnswerverifiedShow Answer

Compare the internal energy of one gram of steam to that of one gram of water if both are at 100 °\degree° C.

Correct AnswerverifiedShow Answer

The temperature of 100 g of water is to be raised from 10 °\degree° C to 90 °\degree° C. The energy needed to do this is about

Correct AnswerverifiedShow Answer

When the temperature of the air in a balloon is raised, the volume of the balloon

Correct AnswerverifiedShow Answer

Two identical objects, one light colored and the other dark colored, are at the same elevated temperature, 50 °\degree° C. You now place them in a dark, much cooler room. Which object will reach the room's temperature first?

Correct AnswerverifiedShow Answer

The temperature of a sample of a substance is a way to gauge

Correct AnswerverifiedShow Answer

When you apply an alcohol swab to your skin, it feels cool because

Correct AnswerverifiedShow Answer

The air at the beach is the same temperature everywhere, but you feel cooler under a beach umbrella because

Correct AnswerverifiedC

You lose your left sandal during a hot afternoon at the beach. Thus, you must hike back to your vehicle with one bare foot across the burning sand. Why does the bare foot get so much hotter?

Correct AnswerverifiedA

Water freezes at 273 on the ________ scale.

Correct AnswerverifiedShow Answer

Thermal-electric solar power stations typically experience fluctuations in available sunlight throughout the day, but can use ______________________ to smooth out electrical power levels to their customers.

Correct Answerverifiedphase-change materia...View AnswerShow Answer

Heat will not be transferred between two bodies that are at the same ____________________.

Correct AnswerverifiedShow Answer

When water boils, the primary form of heat flow in the water is ____________(conduction, convection, radiation).

Correct AnswerverifiedShow Answer

Which of the following temperatures is the lowest?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The transfer of heat from a furnace to the house through ducts is by the process of _________________.

Correct AnswerverifiedShow Answer

The lowest possible temperature a body can approach is called

Correct AnswerverifiedShow Answer

On a cold winter's morning you awake and step out of bed. One foot is on the tile floor and the other is on a rug on the floor. Which statement is true?

Correct AnswerverifiedShow Answer

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Compare the internal energy of one gram of steam to that of one gram of water if both are at 100 $\degree$ C.

Correct Answer
verified

The temperature of 100 g of water is to be raised from 10 $\degree$ C to 90 $\degree$ C. The energy needed to do this is about

Correct Answer
verified

Correct Answer
verified

Two identical objects, one light colored and the other dark colored, are at the same elevated temperature, 50 $\degree$ C. You now place them in a dark, much cooler room. Which object will reach the room's temperature first?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified
phase-change materia...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified