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This quiz consists of 5 multiple choice and 5 short answer questions through Part Four: Electricity and Automation.

Multiple Choice Questions

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

2. What happens when visible rays cross the lens of our eye and are bent through the convex surface?
(a) They form an image on the retina.
(b) They vibrate the iris.
(c) The can burn out the cortex.
(d) They vibrate the retina.

3. What happens if the force of upthrust is equal to the weight of an object in water?
(a) The object sinks.
(b) The object projects out of the water.
(c) The object moves across the surface of the water.
(d) The object floats.

4. What contains one element which is the detonator and another reactive element which acts as the propellant?
(a) Explosives.
(b) Oscillators.
(c) Engines.
(d) Propellants.

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

Short Answer Questions

1. How does Macaulay illustrate the idea of a chemical reaction to produce electricity?

2. What happens when molecules are squeezed or stretched beyond the boundaries of their comfortable balance?

3. Why do electromagnets use the forces of attraction and repulsion alternately to keep machines running?

4. What is another term for electromagnetic waves?

5. What is additive mixing?

(see the answer key)

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