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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. 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 so you can take advantage of your greater strength.
(c) Your effort is reduced, but your strength has to be increased.
(d) Your effort is reduced, and your lesser strength becomes sufficient.

2. What is one example the author uses of a wedge?
(a) A type of door stop.
(b) A ship's ramp.
(c) A block and tackle system.
(d) An escalator.

3. How many forces hold things together?
(a) Four.
(b) One.
(c) Three.
(d) Two.

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

5. What is applied to a lever to make it move?
(a) Gravitational pull.
(b) Force.
(c) Balance.
(d) Work.

Short Answer Questions

1. What is a first-class lever?

2. What is one component of a lever?

3. How many types of gears are there?

4. What is another type of wedge the author mentions?

5. Upon what principle does a pulley work?

(see the answer key)

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