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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. What do the double walls of a thermos enclose?
(a) Argon.
(b) A vacuum.
(c) Nitrogen.
(d) Oxygen.

2. Where is steam still used?
(a) In some internal combustion engines.
(b) In thermal power stations.
(c) In water plants.
(d) In industrial engines.

3. What is convection?
(a) The way a molecule radiates heat.
(b) Heat moving from a liquid or gas molecule to another.
(c) When heat increases velocity.
(d) When heat causes wind.

4. What is an example of a second-class lever?
(a) A crane.
(b) A nutcracker.
(c) A clock.
(d) An engine block system.

5. What forms a molecule?
(a) Six or less atoms.
(b) Five or more atoms.
(c) One or more atoms.
(d) Two or more atoms.

Short Answer Questions

1. What is one component of a lever?

2. What does the inclined plane do?

3. What is the principle behind the action of any machine?

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

5. What is the factor which determines an object's ability to float?

(see the answer key)

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