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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Exploiting Heat, Nuclear Power, pp. 142-173.

Multiple Choice Questions

1. What does a driving force initiate?
(a) Electron activity.
(b) Movement.
(c) Inertia.
(d) Work.

2. When an object absorbs light rays, how is the energy held in the object?
(a) There is no energy involved.
(b) As kinetic energy.
(c) As inertial energy.
(d) As heat.

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

4. What is an example of a second-class lever?
(a) A crane.
(b) A clock.
(c) A nutcracker.
(d) An engine block system.

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

Short Answer Questions

1. Under normal circumstances, what force(s) does a molecule possess?

2. Where is steam still used?

3. What happens when you exert your strength across a longer distance?

4. What is the density of salt water compared to fresh water?

5. Upon how many major principles do propellers and rudders work?

(see the answer key)

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