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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 the distance between each peak of energy in a wave?
(a) The minimum length.
(b) The optimum length.
(c) The wavelength.
(d) The oscillation factor.

2. What principle does a thermostat use?
(a) The principle of entropy.
(b) The third principle of thermonectics.
(c) The law of electronic fission.
(d) The principle that heat causes expansion.

3. What is the density of salt water compared to fresh water?
(a) They have the same density.
(b) Salt water is denser.
(c) Fresh water is denser.
(d) It depends on their electrical charge.

4. What is a first-class lever?
(a) Where the distance is further from the fulcrum than the effort.
(b) Where there is no load needed for the effort.
(c) Where the effort is a greater distance from the fulcrum than the load.
(d) Where the effort and the load are equal distances from the fulcrum.

5. What forms a molecule?
(a) Six or less atoms.
(b) One or more atoms.
(c) Five or more atoms.
(d) Two or more atoms.

Short Answer Questions

1. If you put a copper wire and a zinc wire into a lemon, what occurs?

2. How does a ship vary in density?

3. What is a core of wire wound around an iron core?

4. What is created when heating an object to the point that it burns or glows, or by passing an electric current through a vapor or gas?

5. What is the term for the process of molecules moving further apart in convection?

(see the answer key)

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