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Name: ________________________ Class: ___________________ Date: __________
ID: A
Chapter 4: Heat -- Multi-format Test
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
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1. Atoms that are formed into groups are known as molecules. _________________________
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2. The size of the atoms that make up matter determines the amount of heat energy the matter holds.
_________________________
____
3. In order to heat an object, atoms must be added to increase the speed of the object’s atoms.
_________________________
____
4. The majority of the energy that comes off a light bulb is light energy. _________________________
____
5. Earth’s surface energy comes from the sun in the form of radiant energy. _________________________
Completion
Complete each statement.
Select the correct term to complete each sentence. There are extra terms in the list.
atoms
added
radiation
molecules
convection
kinetic energy
subtracted
conduction
thermal energy
6. All matter consists of tiny particles known as ____________________.
7. Groups of atoms that make up most matter are called ____________________.
8. To heat an object, energy must be ____________________ to increase the speed of the object’s atoms.
9. ____________________ causes warm air to rise and cool air to sink.
10. The main characteristic of ____________________ is that heat energy is spread without direct contact or
movement of atoms.
11. The energy of motion is called ___________________________________ (two words).
Matching
A group of science students take a class trip to a coastal area to learn more about heat transfer. Choose the
primary type of heat transfer that occurs in each of the following situations. The types of heat transfer are:
a. Radiation
c. Convection
b. Conduction
____
____
____
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12.
13.
14.
15.
16.
17.
A student burned his finger on a hot charcoal grill.
The sand on the beach felt very hot on the students’ bare feet.
A cool breeze blows off the water.
The sun feels warm on the students’ faces.
The ocean water feels cool on the students’ bare feet.
A hawk soars high above on air currents.
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ID: A
Short Answer
18. How does the speed of the atoms in an ice cube compare to the speed of the atoms in a cup of hot coffee?
19. Which has more heat energy in it: a cup of hot tea or a snowman? Explain your answer.
20. When a light is turned on inside a room, what type of energy is required for the light to turn on?
What type of energy is given off by the light bulb once it is on?
21. What is the most important source of Earth’s surface energy?
22. What is the most important source of Earth’s internal heat energy?
23. Earth’s core is very hot. Where did this heat come from?
Essay
Figure 4-1
The figure shows that large cities such as Los Angeles usually have higher daytime temperatures than the
nearby countryside.
24. Describe how heat energy is spread by radiation, conduction, and convection in the city shown in Figure 4-1.
25. Why do you think the city shown in Figure 4-1 has a higher daytime temperature than the surrounding
countryside?
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ID: A
Chapter 4: Heat -- Multi-format Test
Answer Section
MODIFIED TRUE/FALSE
1. ANS: T
REF: section 4.1
2. ANS: F, speed
PTS: 1
PTS: 1
3. ANS: F
heat
energy
DIF: basic
REF: section 4.1
PTS: 1
4. ANS: F, heat
DIF: intermediate
REF: section 4.1
PTS: 1
5. ANS: T
REF: section 4.3
DIF: intermediate
REF: section 4.1
PTS: 1
DIF: basic
DIF: basic
COMPLETION
6. ANS: atoms
PTS: 1
7. ANS: molecules
DIF: basic
REF: section 4.1
PTS: 1
8. ANS: added
DIF: basic
REF: section 4.1
PTS: 1
9. ANS: Convection
DIF: intermediate
REF: section 4.1
DIF: basic
REF: section 4.2
PTS: 1
DIF: basic
11. ANS: kinetic energy
REF: section 4.2
PTS: 1
10. ANS: radiation
PTS: 1
DIF: basic
REF: section 4.1
PTS: 1
PTS: 1
PTS: 1
DIF: intermediate
DIF: intermediate
DIF: intermediate
MATCHING
12. ANS: B
13. ANS: B
14. ANS: C
1
REF: section 4.2
REF: section 4.2
REF: section 4.2
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ID: A
15. ANS: A
16. ANS: B
17. ANS: C
PTS: 1
PTS: 1
PTS: 0
DIF: intermediate
DIF: intermediate
DIF: intermediate
REF: section 4.2
REF: section 4.2
REF: section 4.2
SHORT ANSWER
18. ANS:
The atoms in the hot coffee are moving faster than the atoms in the ice cube. Atoms move faster as they heat
up and move slower as they cool down.
PTS: 1
DIF: basic
REF: section 4.1
19. ANS:
The snowman contains more total heat energy than the cup of hot tea. The tea has a higher temperature, which
is the average kinetic energy of its molecules, but has less total energy than the snowman, which is much
larger and holds more heat energy.
PTS: 1
DIF: intermediate REF: section 4.1
20. ANS:
Electricity is required to turn the light on. Heat and light are given off by the light bulb.
PTS: 1
DIF: basic
REF: section 4.1
21. ANS:
The sun is the most important source of Earth’s surface energy.
PTS: 1
DIF: intermediate REF: section 4.3
22. ANS:
The core is the most important source of Earth’s internal energy.
PTS: 1
DIF: intermediate REF: section 4.3
23. ANS:
Most of the core’s heat energy is left over form when Earth formed. And some of the core’s heat energy is
from the breakdown of radioactive atoms.
PTS: 1
DIF: basic
REF: section 4.3
ESSAY
24. ANS:
Energy from the sun reaches the ground in the city as radiant energy. Conduction spreads heat energy
between the ground and anything in direct contact with the ground, such as buildings, cars, or people. As the
ground in the city warms up, the air in the city also gains heat energy. Heat is spread by convection as the
warm air rises.
PTS: 1
DIF: advanced
REF: section 4.2
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ID: A
25. ANS:
Cities tend to reach higher temperatures because the ground is mostly covered over with dark colored asphalt
streets. The darker colored asphalt absorbs more radiant energy from the sun than the unpaved ground in the
countryside.
PTS: 1
DIF: advanced
REF: section 4.2
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