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This quiz consists of 5 multiple choice and 5 short answer questions through Part 3, Working with Waves.

Multiple Choice Questions

1. What is an absence of substance?
(a) A vacuum.
(b) Outer space.
(c) Gravity.
(d) Matter.

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

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 happens when orbiting electrons are energized so that they jump away from their nucleus and then fall back?
(a) They burn out.
(b) They lose their rotation pattern.
(c) They exchange energy with the nucleus.
(d) They emit a ray of light on impact.

5. What happens when you exert your strength across a longer distance?
(a) Your effort is reduced, but your strength has to be increased.
(b) Nothing happens. It is all balanced by the decreased work required.
(c) Your effort is reduced, and your lesser strength becomes sufficient.
(d) Your effort is reduced so you can take advantage of your greater strength.

Short Answer Questions

1. Where are wheels and axles found?

2. How many ways can heat travel?

3. What happens when visible rays cross the lens of our eye and are bent through the convex surface?

4. How does a rocket engine power the craft?

5. What turns the crankshaft in an internal combustion engine?

(see the answer key)

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