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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 is a fulcrum?
(a) A point at which inertia is overcome.
(b) A formula for determining energy needed to do work.
(c) A pivot point.
(d) A special sort of wedge.

2. What occurs when molecules begin vibrating in a solid, then speed up their vibration when heated?
(a) Conduction.
(b) Solid combustion.
(c) Radiation.
(d) Internal combustion.

3. What controls the movement in a gear system?
(a) The size of the belt.
(b) The rotation of the gear.
(c) The size of the gear.
(d) The inertia needed to be overcome.

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

5. What are tanks that take in water to increase the density of the craft?
(a) Bilge.
(b) Ballast.
(c) Variable.
(d) Rolling.

Short Answer Questions

1. Through what can heat not travel?

2. How many ways can heat travel?

3. What does the picture of a mammoth pulling a merry-go-round illustrate?

4. How does a rocket engine power the craft?

5. What is one example the author uses of a wedge?

(see the answer key)

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