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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 occurs when very small atoms smash together?
(a) Nuclear fusion.
(b) Nuclear inertia.
(c) Nuclear fission.
(d) Nuclear clarification.

2. What does the inclined plane do?
(a) Decreases effort.
(b) Extends the distance to a rise.
(c) Increases effort.
(d) Decreases gravitational force.

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

4. What is a first-class lever?
(a) Where the effort and the load are equal distances from the fulcrum.
(b) Where the effort is a greater distance from the fulcrum than the load.
(c) Where there is no load needed for the effort.
(d) Where the distance is further from the fulcrum than the effort.

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

Short Answer Questions

1. What is suction referred to in the act of flying?

2. What causes sideways movements of a ship?

3. In flying, what is used to overcome weight from gravity?

4. What is the resistance of an object to any change in its speed or direction?

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

(see the answer key)

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