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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 are different level marks for different types of water on the side of a ship called?
(a) Anchor marks.
(b) Plimsoll lines.
(c) Horizon marks.
(d) Flow marks.

2. What forms a molecule?
(a) Two or more atoms.
(b) One or more atoms.
(c) Six or less atoms.
(d) Five or more atoms.

3. What does one have to understand in order to understand the way things work?
(a) The underlying principle.
(b) The reason something is made.
(c) The terms of physics.
(d) The function of something.

4. The rack and pinion is an example of ______________.
(a) A stifle.
(b) A wedge.
(c) A gear.
(d) A lever.

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

Short Answer Questions

1. What happens when an object is placed in water?

2. What is a substance that contains only one type of atom?

3. What are small propellers mounted in the base of a ship's hull?

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

5. What additional tasks can a boat with two triangular sails do?

(see the answer key)

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