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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 how much water is on board.
(c) According to how long it takes to get underway.
(d) According to the speed it is making.

2. What is suction referred to in the act of flying?
(a) Floating.
(b) Glide.
(c) Sinking.
(d) Lift.

3. What does the Mechanics of Movement explore?
(a) How pulleys ultimately lose energy that can never be regained.
(b) How the movement of anything can be either a net gain or net loss of energy.
(c) How pulleys can create energy.
(d) How the conservation of energy plays into movement, force, and effort.

4. What is another type of wedge the author mentions?
(a) The inversion ring.
(b) The gate latch.
(c) The caliper.
(d) The sharp tapered edge of axes.

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

Short Answer Questions

1. When an object absorbs light rays, how is the energy held in the object?

2. What are the effects of electricity?

3. What pumps refrigerant out in an air conditioner?

4. Upon how many major principles do propellers and rudders work?

5. What imparts movement into the air or water around them on a ship?

(see the answer key)

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