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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 sound waves do to molecules?
(a) Skirt around them.
(b) Cause them to implode.
(c) Pass a vibration through them.
(d) Cause them to explode.

2. What turns the crankshaft in an internal combustion engine?
(a) Gear.
(b) Pulley.
(c) Piston.
(d) Steam.

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

4. What is the most common form of inclined plane found in machines?
(a) The rocker.
(b) The rods.
(c) The wedge.
(d) The pully.

5. What are small propellers mounted in the base of a ship's hull?
(a) Thrusters.
(b) Stablizers.
(c) Tillers.
(d) Rudders.

Short Answer Questions

1. Towards which direction do electrons move on a magnet?

2. What occurs when very small atoms smash together?

3. What are different level marks for different types of water on the side of a ship called?

4. What is it called when filters block out all the rays except ones vibrating in a chosen field?

5. What is the principle that states energy is neither created nor destroyed?

(see the answer key)

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