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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 do the double walls of a thermos enclose?
(a) Nitrogen.
(b) Oxygen.
(c) Argon.
(d) A vacuum.

2. What urges do molecules possess?
(a) The urge to huddle together or spread apart.
(b) Only the urge to spread apart.
(c) Only the urge to huddle together.
(d) None.

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

4. What is the action of something burning?
(a) Convection.
(b) Combustion.
(c) Molecular deceleration.
(d) Radiation.

5. Through what can heat not travel?
(a) Very dense elements.
(b) There is nothing through which heat cannot travel.
(c) A vacuum.
(d) Very porous elements.

Short Answer Questions

1. What are two things that can happen to light rays?

2. What principle does a thermostat use?

3. What contains one element which is the detonator and another reactive element which acts as the propellant?

4. Why does a thermos lose heat?

5. What is any engine that burns fuel inside the engine?

(see the answer key)

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