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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5 Elementary Particles and the Forces of Nature.

Multiple Choice Questions

1. What type of theories try to bring the various virtual particles together as one entity, but do not include gravity?
(a) Theories of Everything.
(b) Grand Complete Theories.
(c) Grand Unification Theories.
(d) Theories of Unification Principles.

2. Most people believe that since the universe had a beginning it must have a what?
(a) A middle.
(b) A timeline.
(c) A birth.
(d) An end.

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

4. Why do the theories of quantum mechanics and general relativity need to be unified?
(a) To accurately calculate observations.
(b) To accurately describe the fate of the universe.
(c) To accurately describe the very small and the very large.
(d) To accurately describe future events.

5. What is one of the colors of quarks?
(a) Red.
(b) Purple.
(c) Yellow.
(d) White.

Short Answer Questions

1. Edwin Hubble's observation that the universe is expanding supports what theory?

2. Who proposed the elliptical orbits of the planets?

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

4. Why did the Christian church adopt Ptolemy's view of the universe?

5. The writer of the Introduction hints that time might be able to move in what direction?

(see the answer key)

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