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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Exploiting Heat, Nuclear Power, pp. 142-173.

Multiple Choice Questions

1. How many types of gears are there?
(a) Seven.
(b) Four.
(c) Five.
(d) One.

2. What is the most common form of inclined plane found in machines?
(a) The rods.
(b) The pully.
(c) The wedge.
(d) The rocker.

3. What is the term for the process of molecules moving further apart in convection?
(a) Trajection.
(b) Acceleration.
(c) Inference.
(d) Expansion.

4. What does the picture of a mammoth pulling a merry-go-round illustrate?
(a) Levers.
(b) Blocks and tackles.
(c) Wedges.
(d) Gears and belts.

5. What turns the crankshaft in an internal combustion engine?
(a) Gear.
(b) Pulley.
(c) Piston.
(d) Steam.

Short Answer Questions

1. Why is cold water denser than warm water?

2. What do you have to use in order to accomplish work with half the effort?

3. What are two things that can happen to light rays?

4. What is one component of a lever?

5. How does a wedge move an object up an inclined plane?

(see the answer key)

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