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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 principle behind the action of any machine?
(a) The type of energy it takes to make the machine work.
(b) The amount of energy it saves.
(c) The conservation of energy.
(d) The amount of energy it expends.

2. How does floating harness the power obtained by squeezing or stretching molecules?
(a) By gathering the individual electrons that are released.
(b) Through the form of upthrust.
(c) By energy "floating" through atomic fields and breaking the bonds to release energy.
(d) By squeezing an atom to split the proton and neutron.

3. What is the most common form of inclined plane found in machines?
(a) The rods.
(b) The wedge.
(c) The rocker.
(d) The pully.

4. How are signals and messages created out of light and radio waves?
(a) Coalescing the waves into bundles.
(b) Harnessing the shorts bursts of energy.
(c) Causing the waves to ocillate at a different hertz.
(d) Interrupting wave patterns.

5. What two elements combine to make a body scanner?
(a) Magnetic fields and sound waves.
(b) Sound waves and radio waves.
(c) Magnetic fields and light waves.
(d) Radio waves and magnetic fields.

Short Answer Questions

1. What happens if the edges of the two wheels touch?

2. What is an example of a second-class lever?

3. In what part of the atom does one find electrons?

4. What is the meaning of the acronym LASER?

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

(see the answer key)

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