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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 are the effects of electricity?
(a) Only magnetism.
(b) Only light.
(c) It depends on the amperage.
(d) Heat, light, and magnetism.

2. What is the distance between each peak of energy in a wave?
(a) The minimum length.
(b) The wavelength.
(c) The oscillation factor.
(d) The optimum length.

3. Under normal circumstances, what force(s) does a molecule possess?
(a) The force of energy times matter.
(b) An attracting force and a repelling force.
(c) The force to overcome inertia.
(d) The force of electron splitting.

4. What emits both infrared and light rays?
(a) A light bulb.
(b) The moon.
(c) A planet.
(d) The sun.

5. What happens when molecules are squeezed or stretched beyond the boundaries of their comfortable balance?
(a) The molecules are driven to remain unbalanced.
(b) They remain in an uneasy balance.
(c) The molecules dissipate into individual atoms that can be lost or destroyed.
(d) The molecules are driven to return to that balance.

Short Answer Questions

1. How does a zipper operate?

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

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

4. What principle does a thermostat use?

5. In which direction do electrons always travel?

(see the answer key)

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