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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. Upon what principle does a pulley work?
(a) It is easier to pull something down rather than up.
(b) The rotation of one gear pulls the other.
(c) It is easier to overcome gravity than force.
(d) The amount of work required is halved by the amount of effort.

2. How does a wedge move an object up an inclined plane?
(a) It lowers the plane so the object slides.
(b) It doesn't ; the wedge moves the plane itself to raise an object.
(c) It uses the effect of gravity.
(d) It forces the object to reduce the effects of gravity.

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

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

5. What does the picture of a mammoth pulling a merry-go-round illustrate?
(a) Gears and belts.
(b) Levers.
(c) Blocks and tackles.
(d) Wedges.

Short Answer Questions

1. The rack and pinion is an example of ______________.

2. What happens if the edges of the two wheels touch?

3. What does the inclined plane do?

4. What is applied to a lever to make it move?

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

(see the answer key)

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