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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 is one thing an electrical current can measure?
(a) Particles in the air.
(b) Frequency.
(c) Opacity.
(d) Density.

2. What is an example of a second-class lever?
(a) An engine block system.
(b) A nutcracker.
(c) A crane.
(d) A clock.

3. What is the resistance of an object to any change in its speed or direction?
(a) Gravity.
(b) Propulsion.
(c) Lift.
(d) Inertia.

4. How does a zipper operate?
(a) It is not a wedge system, but rather a rolling arc system.
(b) The use of triangular wedges and lower curved wedges.
(c) Just lower curved wedges.
(d) Just using triangular wedges.

5. What do machines that keep something cool do to heat?
(a) Transpose it.
(b) Exchange it with cold material.
(c) Cause a change in velocity.
(d) Remove it.

Short Answer Questions

1. What is the absence of any light?

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

3. Of what is color photography paper made when printing from a negative?

4. What principle does a thermostat use?

5. What imparts movement into the air or water around them on a ship?

(see the answer key)

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