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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Introduction, Floating, Flying and Pressure Power, pp.91-141.

Multiple Choice Questions

1. What is the effort you put in combined with the distance over which the effort is done?
(a) Gravity.
(b) Work.
(c) Rest.
(d) Mendal's law.

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

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

4. What is an object's weight divided by its volume?
(a) The object's ability to exert force.
(b) An object's elemental number.
(c) The object's constant mass.
(d) An object's density.

5. What are small propellers mounted in the base of a ship's hull?
(a) Stablizers.
(b) Tillers.
(c) Thrusters.
(d) Rudders.

Short Answer Questions

1. What do you have to use in order to accomplish work with half the effort?

2. What forms a molecule?

3. What does one have to understand in order to understand the way things work?

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

5. What does a driving force initiate?

(see the answer key)

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