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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. Why can a dog hear a dog whistle that humans cannot?
(a) They can hear sound waves at a greater range of frequencies.
(b) Their eardrums are larger.
(c) They have been trained to listen to that particular frequency.
(d) They can isolate a sound better than humans.

2. What occurs when molecules begin vibrating in a solid, then speed up their vibration when heated?
(a) Conduction.
(b) Solid combustion.
(c) Internal combustion.
(d) Radiation.

3. What is additive mixing?
(a) Adding black light to one of the colors of light.
(b) Mixing all three of the colors of light in different proportions.
(c) Adding more of one of the colors that make up light to black.
(d) Combining two of the colors that make up light to create a different color.

4. What is the magnetic field caused by an electric force?
(a) Motive force.
(b) Positron force.
(c) Polar force.
(d) Neutrino force.

5. What does a driving force initiate?
(a) Work.
(b) Movement.
(c) Inertia.
(d) Electron activity.

Short Answer Questions

1. What is another term for electromagnetic waves?

2. What urges do molecules possess?

3. What principle is in use as a propeller pushes the water back and as that same water which has been pushed back rolls forward again and hits the propeller?

4. What is one phenomenon a measurement of force measures?

5. How is magnetism created?

(see the answer key)

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