Page 255 - Science Course 3 (Book 1)

Mo7-L2: Lesson Review Quiz (Multiple Choice)

Direction: On the line before each question or statement, write the letter of the correct answer.

1. An energy ___________ occurs when energy changes from one type to another type.
A. increase
B. conversion
C. transformation

2. What happens to potential energy when a ball is tossed into the air?
A. It never changes.
B. It increases as the ball approaches its highest point.
C. It decreases as the ball approaches its highest point.

3. According to the law of conservation of energy, energy cannot
A. be created or destroyed.
B. transferred from one region to another.
C. transformed from one form into another.

4. When a ball is thrown into the air, its kinetic energy is lowest
A. at its highest point.
B. at the moment it is released.
C. as it begins to fall back to the ground.

5. What type of energy transformation occurs during photosynthesis?
A. Radiant energy becomes chemical energy.
B. Thermal energy becomes chemical energy.
C. Nuclear energy becomes mechanical energy

Mo7-L2: Lesson Review Quiz (Matching)

Direction: On the line before each definition, write the letter of the term that matches it correctly.
Each term is used only once.

6. transforms gravitational potential energy into kinetic energy A. friction
7. transforms mechanical energy into thermal energy B. lubricant

8. transforms radiant energy into sound energy C. electric heater
9. force that reduces kinetic energy and produces heat D. cell phone
10. reduces friction’s creation of thermal energy E. a marble falling off a table

Direction: Respond to each statement on the lines provided

11. Describe the way friction transforms energy and the way friction can be reduced.

12. Show how the law of conservation of energy is proved to be accurate by the energy changes that happen
when an object falls from a table to the floor.

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