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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 9 The Arrow of Time.

Multiple Choice Questions

1. What is one of the categories of force-carrying virtual protons?
(a) Gluons.
(b) Gravityions.
(c) Electrons.
(d) Stickons.

2. Who developed the uncertainty principle?
(a) Werner Heisenberg.
(b) Marie Curie.
(c) Stephen Hawking.
(d) Max Plank.

3. What does the letter C stand for in combinations of operations?
(a) Changing particles for antiparticles.
(b) Changing matter particles for virtual particles.
(c) Changing heavy particles for light particles.
(d) Changing positive particles for negative particles.

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

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

Short Answer Questions

1. How close is the closest star, other than the sun, to earth?

2. What question is among the unanswerable questions children ask, according to the Introduction?

3. Time is not separate from space, but is combined with it to form what?

4. What does a particle with 0 spin look like?

5. Which of the following is not an arrow of time recognized by Hawking's book?

(see the answer key)

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