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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 pumps refrigerant out in an air conditioner?
(a) A compressor.
(b) A solenoid.
(c) Oscillator.
(d) A gear.

2. What is an absence of substance?
(a) A vacuum.
(b) Gravity.
(c) Outer space.
(d) Matter.

3. What is convection?
(a) When heat increases velocity.
(b) The way a molecule radiates heat.
(c) When heat causes wind.
(d) Heat moving from a liquid or gas molecule to another.

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

5. What is the transfer of heat through infrared rays?
(a) Thermal radiation.
(b) Convection.
(c) Transmigration.
(d) Heat cannot transfer through infrared rays.

Short Answer Questions

1. What are two things a sail can do for a craft?

2. What is a substance that contains only one type of atom?

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

4. What turns the crankshaft in an internal combustion engine?

5. What happens when an object is placed in water?

(see the answer key)

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