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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) Frequency.
(b) Density.
(c) Opacity.
(d) Particles in the air.

2. What is a substance that contains only one type of atom?
(a) A cell.
(b) A quantum.
(c) An element.
(d) A molecule.

3. What are two things that can happen to light rays?
(a) They can be reflected or absorbed.
(b) They can be dissolved.
(c) They can be dissipated.
(d) They can be destroyed by gamma rays.

4. What is one component of a lever?
(a) A spring.
(b) A straight edge.
(c) A screw.
(d) A caliper.

5. What is a fulcrum?
(a) A pivot point.
(b) A point at which inertia is overcome.
(c) A formula for determining energy needed to do work.
(d) A special sort of wedge.

Short Answer Questions

1. How do mirrors reflect an image?

2. How does a ship vary in density?

3. What is a first-class lever?

4. Where is steam still used?

5. What urges do molecules possess?

(see the answer key)

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