DO NOT YOU DARE WRITE ON THIS TEST 1 Practice Test: Energy, Electricity & Waves True/False Indicate whether the statement is true or false. The Only Reason to Learn Algebra is to do Physics 1. Power is the rate at which work is done. a. True b. False 2. A power lifter does work holding a barbell weighing nearly 2300N above his head. a. True b. False 3. When you rise on a playground swing, your potential energy is greatest at the top of each swing. a. True b. False 4. An object’s potential energy is based on how fast it is moving. a. True b. False Compare, contrast and review the heat transfer processes 5. Radiation is the transfer of energy in the form of particles. a. True b. False 6. Heat is a measure of the average kinetic energy of all the particles in an object. a. True b. False Wave anatomy, properties and examples 7. Sound waves do NOT carry energy. a. True b. False
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DO NOT YOU DARE WRITE ON THIS TEST
1
Practice Test: Energy, Electricity & Waves
True/False
Indicate whether the statement is true or false.
The Only Reason to Learn Algebra is to do Physics
1. Power is the rate at which work is done.
a. True
b. False
2. A power lifter does work holding a barbell weighing nearly 2300N above his head.
a. True
b. False
3. When you rise on a playground swing, your potential energy is greatest at the top of each
swing.
a. True
b. False
4. An object’s potential energy is based on how fast it is moving.
a. True
b. False
Compare, contrast and review the heat transfer processes
5. Radiation is the transfer of energy in the form of particles.
a. True
b. False
6. Heat is a measure of the average kinetic energy of all the particles in an object.
a. True
b. False
Wave anatomy, properties and examples
7. Sound waves do NOT carry energy.a. True
b. False
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8. Mechanical waves require a medium through which to travel.a. True
b. False
9. Waves is which the particles of medium move perpendicular to the direction of the wave
are longitudinal waves.a. True
b. False
10. The lowest point on a compression wave is the trough.
a. True
b. False
Matching
Wave anatomy, properties and examples
Match the type of wave to its definition, description or example.
You may use an answer more than once, not at all or both at the same time.
a. Transverse b. Longitudinal
11. Compressions
12. Rarefactions
13. Sound
14. Carries Energy
15. Troughs
16. Crests
17. Matter? Nope. Don’t need it.
18. Light
19. MUST have a medium
20. Electromagnetic
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“Track” Energy Transformations
Energy is conserved but transforms
Follow an energy source as it transforms and transfers
Identify the various forms energy takes
Match the energy transformations with their examples. You might use an answer more than
once or not at all.
a. Chemical ⇒ Heat + Light
b. Chemical ⇒ Electrical + Heat
c. Mechanical ⇒ Light + Heat
d. Chemical ⇒ Electrical ⇒ Kinetic
e. Electrical ⇒ Kinetic
21. Camp fire
22. Flashlight
23. Ceiling fan
24. iPhone
25. Match
Multiple Choice
Identify the choice that best completes the statement or answers the question.
The Only Reason to Learn Algebra is to do Physics
26. If you push an object twice as far while applying the same force, you do -
a. twice as much work.
b. four times as much work.
c. the same amount of work.
27. A job is done slowly, while an identical job is done quickly. Both jobs require the same amount
of work, but different amounts of -
a. force.
b. power.
c. energy.
d. friction.
e. Joules
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28. In which of the following situations do your arms do work on books?
a. holding a heavy stack of books while standing
b. carrying a heavy stack of books
c. dropping a stack of books onto a table
d. picking up a pile of books from the floor
29. At what point in its motion is the gravitational potential energy of the ball at its maximum?
a. When it is first hit
b. When it lands
c. At the top of the arc
d. Halfway down the arc
e. Halfway up the arc
30. An object is raised above the ground gaining a certain amount of potential energy. If the same
object is raised twice as high, it gains -
a. twice as much energy.
b. half as much energy.
c. no energy.
d. ten times the energy.
e. half as much energy as gravity.
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“Track” Energy Transformations Energy is conserved but transformed Follow an energy source as it transforms and transfers Identify the various forms energy takes
31. The diagram below represents an ideal (frictionless) pendulum. As the pendulum swings from
position A to position B, what happens to the total energy?
a. Increases
b. Decreases
c. Stays the same
32. At which point is PE being transferred into KE?
a. F
b. G
c. H
d. K
e. J
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33. A student is going to compress the object shown in the diagram.
Which form of energy will the object gain when it is compressed?
a. chemical
b. electrical
c. potential
d. electromagnetic
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34. When a hand-held fan is turned on, the blades spin. Which diagram shows the energy
conversion that is required to make the fan work?
a.
b.
c.
d.
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35. When the slingshot is held in position as in the diagram, what kind of energy is present?
a. kinetic energy
b. potential energy
c. electrical energy
d. electromagnetic energy
36. The diagram below shows the flight of a thrown object. What happens to the PE of the object
from point A to point B?
a. Increases
b. Decreases
c. Stays the same
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Compare, contrast and review the heat transfer processes
37. The inside surface of a vacuum bottle (thermos or insulated cup) is coated with shiny
aluminum to prevent heat loss by -
a. combustion.
b. radiation.
c. conduction.
d. convection.
38. Through which of the following will convection most likely occur?
a. liquids and gases
b. solids and liquids
c. solids
d. solids and gases
39. Inside a room, the air is often warmer near the ceiling than near the floor. Which of the
following accounts for this difference in temperature?
a. radiation
b. insulation
c. convection
d. conduction
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40. As Wilma holds a pan over a fire, the water begins to boil, as shown in the figure below.
Which process is indicated by the letter Z?
a. radiation
b. insulation
c. convection
d. conduction
41. Which of the following is the transfer of energy as heat by the movement of a liquid or gas?
a. conduction
b. convection
c. emission
d. radiation
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42. The thermal energy of the iron in room D is transferred to the clothes by -
a. radiation.
b. convection.
c. conduction.
43. The thermal energy is transferred to the sunbather in room B primarily by -
a. radiation.
b. convection.
c. conduction.
ID: A
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Practice Test: Energy, Electricity & Waves
Answer Section
TRUE/FALSE
1. ANS: T PTS: 1
2. ANS: F PTS: 1
3. ANS: T PTS: 1
4. ANS: F PTS: 1
5. ANS: F PTS: 1 DIF: B OBJ: 5/2
6. ANS: F PTS: 1 DIF: A OBJ: 1/1
7. ANS: F PTS: 1
8. ANS: T PTS: 1
9. ANS: F PTS: 1
10. ANS: F PTS: 1
MATCHING
11. ANS: B PTS: 1
12. ANS: B PTS: 1
13. ANS: B PTS: 1
14. ANS: A PTS: 1
15. ANS: A PTS: 1
16. ANS: A PTS: 1
17. ANS: A PTS: 1
18. ANS: A PTS: 1
19. ANS: B PTS: 1
20. ANS: A PTS: 1
21. ANS: A PTS: 1
NOT: Fire is "always" chemical and "always" radiant. Heat and light are the same thing.
22. ANS: B PTS: 1
23. ANS: E PTS: 1
24. ANS: B PTS: 1
25. ANS: A PTS: 1
MULTIPLE CHOICE
26. ANS: A PTS: 1
27. ANS: B PTS: 1
28. ANS: D PTS: 1
ID: A
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29. ANS: C PTS: 1
30. ANS: A PTS: 1
31. ANS: C PTS: 1
32. ANS: B PTS: 1
33. ANS: C
A is incorrect because chemical energy is stored in the bonds that hold matter together, and this form of energy
will not change during compression.
B is incorrect because electrical charges are not transferred to the object during compression.
C is correct because the spring gains potential energy during compression, which is part of its total mechanical
energy.
D is incorrect because electromagnetic energy is transferred as waves, such as light.
PTS: 1
DIF: Cognitive Complexity: Moderate | Student Level: Average | Depth of Knowledge 2: Basic