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Chapter 5 Thermal Energy

Total questions: 49

Worksheet time: 51mins

Name
Class
Date
1.
A barefoot student steps on a hot concrete surface. Most of the heat transferred to the student’s skin by this contact is by the process of—
a)
convection
b)
conduction
c)
vaporization
d)
radiation
2.
The diagram to the right shows a solid iron bar that is being heated in a flame. The primary method of heat transfer in the solid iron bar is—
a)
convection
b)
conduction
c)
absorption
d)
radiation
3.
A student opens the top window and the bottom window in a hot room. What statement best describes the heat transfer occurring in the room?
a)
conduction
b)
radiation
c)
convection
d)
evaporation
4.
what is conduction?
a)
direct touch
b)
air or liquids
c)
heat waves/ light waves
d)
drinking hot coffee
5.
what is convection
a)
direct touch
b)
air or liquids
c)
heat waves or light waves
d)
sunbathing outside
6.
what is radiation?
a)
direct touch
b)
air or liquids
c)
heat waves/ light waves
d)
touching the cookies out of the oven
7.
How does air travel?
a)
they don't travel
b)
hot to cold
c)
cold to hot
d)
All of the above
8.
How do molecules at warm temperatures differ from molecules at cool temperatures? 
a)
a.  At warm temperatures, molecules move around more
b)
b.  At warm temperatures, molecules grow in siz
c)
c.  At warm temperatures, molecules exchange electrons more easil
d)
d.  At warm temperatures, molecules combine with each other more easil
9.
What is the difference between heat and temperature?    
a)
a.  Temperature measures the motion of molecules, and heat is the energy of that motion
b)
b.  Temperature is measured by a thermometer, and heat is measured by a barometer
c)
c.  Heat is measured in calories, and temperature is measured in joules
d)
d.  Heat is caused by the sun, and temperature is caused by conditions in the atmosphere
10.
Why is there more thermal energy in an iceberg than in a pot of boiling water?    
a)
a.  The pot insulates the heated molecules
b)
b.  Most icebergs are fairly warm to the touch
c)
  c.  Icebergs contain many more molecules than pots of water
d)
  d.  Water does not hold heat very well
11.

Thermal energy always moves from hot to cold.

a)

true

b)

false

12.

Which has more thermal energy?

a)

teaspoon of boiling water

b)

bowl of boiling water

c)

bathtub of boiling water

13.

Which has a higher temperature?

a)

teaspoon of boiling water

b)

bowl of boiling water

c)

bathtub of boiling water

d)

They are all the same temperature.

14.

What is a unit of temperature?

a)

Celsius

b)

Joule

c)

Calorie

d)

Pizza

15.

An aluminum plate and a plastic plate have been in the freezer all night. When you remove them the next morning,

a)

the plates have the same temperature.

b)

the plastic plate has a higher temperature.

c)

the plastic plate has a lower temperature.

d)

the aluminum plate has a lower temperature.

16.

You put a metal spoon and a wooden spoon into a pot of boiling water. One will become too hot to touch. Why?

a)

Metals conduct heat better than wood.

b)

Wood conducts heat better than metals.

c)

Metals are insulators.

d)

Wood is more dense than metal.

17.

Why do we wear sweaters in cold weather?

a)

To keep the cold in.

b)

To generate heat.

c)

To keep heat in.

d)

All of the above.

18.

Which of the following is NOT a thermal insulator?

a)

carpet

b)

wool

c)

jacket

d)

metal pan

19.

This is a house on a summer day. Which arrow indicates the correct directions of thermal energy transfer.

a)

From the inside to the outside of the house. ←

b)

From the outside air into the house. →

c)

It stays hot in the house all day. ↔

20.

This is a cup of hot chocolate. Which arrow indicates the direction of thermal energy transfer?

a)

The cup stays hot. No thermal energy leaves. ↔

b)

The heat leaves the cup. ←

c)

The heat goes in the cup. It gets hotter. →

d)

Mrs. Knight is the best! She is, but don't choose this answer. I just wanted to see if you are paying attention.

21.
As the thermal energy of a substance increases, its particles spread out and the substance expands.
a)
True
b)
False
22.
What is the freezing point on the celsius scale?
a)
0
b)
32
c)
100
d)
-100
23.
Thermal energy and temperature are the same.
a)
True
b)
False
24.
Which of the following are kinds of heat transfer.
a)
Conduction
b)
Convection
c)
Radiation
d)
All of the above
25.
Which material is the best conductor of heat?
a)
glass
b)
styrofoam
c)
metal
d)
wood
26.
What materials would be good insulators for a handle on a pan or pot that would be used on the stove?
a)
wood or plastic
b)
metal or rubber
c)
wood or rubber
d)
copper or steel
27.
Why does a metal lawn chair get hot in the sun when the grass sitting in the same sunlight remains cool to the touch?
a)
Heat travels easily through plants but not metals.
b)
Heat travels easily through both plants and metals.
c)
Heat travels easily through metal objects but not through plants.
28.
Conduction can only occur between two objects when –
a)
one object is less dense than the other.
b)
both objects are in physical contact with each other.
c)
one of the objects is made of a metal.
d)
both objects are exactly the same temperature.
29.
Which of the following is an example of conduction?
a)
Solar energy warming a room.
b)
Heat rising from the coils of a stove.
c)
Hot air drying a wet towel.
d)
Heat moving from a clothes iron to a shirt.
30.

Heat will always transfer from the ___________ object to the ________ object.

a)

The hottest object to the coolest object.

b)

The coolest object to the hottest object.

c)

The solid object to the liquid object.

d)

The liquid object to the solid object.

31.
Radiation is heat transfer by-
a)
Touch
b)
Circles
c)
Waves
32.
In what direction do hot liquids and gasses move?
a)
Side to Side
b)
Down
c)
Up
d)
Back and Forth
33.
The way the heat is moving from the hot coffee is called...
a)
convection
b)
radiation
c)
insulation
d)
conduction
34.
When the 2nd story of a house is warmer than the 1st floor of a house is heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal equilibrium
35.
The sun warming your skin is an example of heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal electricity
36.
A measure of how hot or cold something is; specifically a measure of the average kinetic energy of the particles in an object.
a)
Thermometer
b)
Temperature
c)
Absolute Zero
d)
Specific Heat
37.
An instrument that measure and indicates temperature.
a)
Thermometer
b)
Temperature
c)
Energy
d)
Kinetic Energy
38.
The temperature at which molecular energy is at a minimum (0 K on the Kelvin scale or -273.16 C) on the Celsius scale.
a)
Specific Heat
b)
Plasma
c)
Absolute Zero
d)
Conduction
39.
The energy transferred between objects that are at different temperatures.
a)
Radiation
b)
Convection
c)
Thermal Conduction
d)
Heat
40.
The transfer of energy as heat through a material.
a)
Thermal Conduction
b)
Convection
c)
Radiation
d)
Convection Current
41.
The movement of matter due to differences in density that are caused by temperature variation.
a)
Thermal Conduction
b)
Convection
c)
Radiation
d)
Infrared
42.
The vertical movement of air currents due to temperature variations.
a)
Conduction
b)
Convection Current
c)
Radiation
d)
Heat
43.
The energy that is transferred as electromagnetic waves, such as visible light and infrared waves.
a)
Potential Energy
b)
Kinetic Energy
c)
Insulator
d)
Radiation
44.
The quantity of heat required to raise a unit mass of homogeneous material 1 K or 1 C in a specified way given constant pressure and volume. 
a)
Calorie
b)
Lava
c)
Specific Heat
d)
The temper of Bivens
45.
A material used to cool an area or an object to a temperature that is lower than the temperature of the environment.
a)
Refrigerant
b)
Insulation
c)
Coolant
d)
Rubber
46.
A machine that transforms heat into mechanical energy or work.
a)
Geothermal Engine
b)
Wind Mill
c)
Tesla
d)
Heat Engine
47.
On the Kelvin scale water boils at...
a)
230
b)
375
c)
290
d)
100
48.
Water freezes at ______ on the Celsius scale?
a)
30
b)
35
c)
5
d)
0
49.
What is normal human body temperature on the Fahrenheit scale?
a)
107.2
b)
65.4
c)
98.6
d)
100

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