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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 does a ship vary in density?
(a) According to its load.
(b) According to the speed it is making.
(c) According to how much water is on board.
(d) According to how long it takes to get underway.

2. What is one component of a lever?
(a) A screw.
(b) A straight edge.
(c) A caliper.
(d) A spring.

3. What causes increased heat in the process of conduction?
(a) Fission.
(b) Increased movement.
(c) Fusion.
(d) Electronic transfers.

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

5. Why does a thermos lose heat?
(a) The oxygen absorbs the heat.
(b) The argon absorbs the heat.
(c) The molecules eventually slow down.
(d) The heat can travel through the stopper.

Short Answer Questions

1. Upon what principle does a pulley work?

2. How does a rocket engine power the craft?

3. Where are wheels and axles found?

4. What is the term for the process of molecules moving further apart in convection?

5. What is a wheel and rod attacked by a hinge?

(see the answer key)

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