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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 2 Space and Time.

Multiple Choice Questions

1. The only constant in the universe is what?
(a) Space.
(b) Time.
(c) The speed of sound.
(d) The speed of light.

2. What question is among the unanswerable questions children ask, according to the Introduction?
(a) Why are we here?
(b) What happens when we die?
(c) Why does time only go in one direction?
(d) Why is there a universe?

3. From what location was the Introduction written?
(a) Ithaca, CA
(b) Ithaca, AZ
(c) Ithaca, NY
(d) Ithaca, NJ

4. As an observer's velocity comes close to the speed of light, the observer's mass does what?
(a) Decreases to almost nothing.
(b) Stays the same.
(c) Covers more space.
(d) Increases to almost infinity.

5. How does Hawking define scientific theory?
(a) A model of the universe with a set of rules.
(b) A model of the universe made up of molecules.
(c) A model of the universe that predicts some events, but isn't accurate.
(d) A model of the universe that meets common sense expectations.

Short Answer Questions

1. What shape did Aristotle think the Earth was?

2. Who proposed the elliptical orbits of the planets?

3. In what year did Stephen Hawking enter the Royal Society of London?

4. Most people believe that since the universe had a beginning it must have a what?

5. Scientists try to create explanations for the way the universe works that always do what?

(see the answer key)

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