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

2. What may imaginary time surfaces actually be?
(a) Open planes.
(b) Curved surfaces.
(c) Closed surfaces.
(d) Closed lines.

3. What does general relativity combine time with space to form?
(a) Three-dimensional physics.
(b) Four-dimensional space-time.
(c) Two-dimensional planes.
(d) Five-dimensional warp speed.

4. What characteristic of black holes has been stated as never having been observed?
(a) Radiation.
(b) Willpower.
(c) Karma.
(d) Logic.

5. What is thought to expand at an accelerating rate in our universe?
(a) Light.
(b) Scope.
(c) Reach.
(d) Matter.

Short Answer Questions

1. What was the twentieth century's other complete conceptual revolution?

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

3. What was everywhere when the universe was small?

4. If there is a low amount of matter in the universe what will happen?

5. What outline of cosmic strings is flat?

(see the answer key)

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