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This quiz consists of 5 multiple choice and 5 short answer questions through Part 1, The Mechanics of Movement.

Multiple Choice Questions

1. How many types of gears are there?
(a) Seven.
(b) Five.
(c) Four.
(d) One.

2. How does a zipper operate?
(a) Just lower curved wedges.
(b) The use of triangular wedges and lower curved wedges.
(c) It is not a wedge system, but rather a rolling arc system.
(d) Just using triangular wedges.

3. What does the inclined plane do?
(a) Extends the distance to a rise.
(b) Increases effort.
(c) Decreases effort.
(d) Decreases gravitational force.

4. What is the most common form of inclined plane found in machines?
(a) The rocker.
(b) The pully.
(c) The wedge.
(d) The rods.

5. What happens when you exert your strength across a longer distance?
(a) Nothing happens. It is all balanced by the decreased work required.
(b) Your effort is reduced, but your strength has to be increased.
(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. What is the formula for work done?

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

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

4. What controls the movement in a gear system?

5. Upon what principle does a pulley work?

(see the answer key)

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