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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, Protecting the Past.

Multiple Choice Questions

1. What equation shows mass and energy are equivalent?
(a) E = mc2.
(b) G = cm2.
(c) E = cm3.
(d) G = mc3.

2. What does time have?
(a) A presence.
(b) A shape.
(c) A being.
(d) A mark.

3. What did Einstein suggest concerning the speed of light?
(a) Light is independent of motion.
(b) Light is dependent on time.
(c) Light is independent of time.
(d) Light is dependent on motion.

4. What do we need to describe what happens on the edge of the universe?
(a) Boundary laws.
(b) Finite structures.
(c) Boundary conditions.
(d) Limited perceptions.

5. What would a civilization have to do to build a time machine?
(a) Preclude the time travel paradox.
(b) Create a new cosmos.
(c) Generate enough heat to fuel the time machine's engines.
(d) Surpass a time travel "horizon."

Short Answer Questions

1. What is determinism threatened by?

2. What did Newton's model suggest about time and space?

3. Who believed they could interpret General Relativity so time had an infinite past and an infinite future?

4. What sort of lengths do P-branes have?

5. What paradox does time travel generate?

(see the answer key)

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