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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Exploiting Heat, Nuclear Power, pp. 142-173.

Multiple Choice Questions

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

2. What is the action of something burning?
(a) Convection.
(b) Radiation.
(c) Molecular deceleration.
(d) Combustion.

3. What does increasing heat do to molecules?
(a) It slows them down.
(b) It makes them break apart.
(c) It increases the movement of molecules.
(d) Nothing.

4. Upon what does the amount of upthrust of an object in water depend?
(a) On how much water the object displaces.
(b) On what the object's salinity is.
(c) On whether or not the object is greater than one centimeter in diameter.
(d) On what the water's electrical charge is.

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

Short Answer Questions

1. What happens when molecules are squeezed or stretched beyond the boundaries of their comfortable balance?

2. What is one component of a lever?

3. What emits both infrared and light rays?

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

5. How many forces hold things together?

(see the answer key)

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