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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 kind of rotating Einstein universe does Hawking consider?
(a) A hypothetical universe.
(b) A realistic universe.
(c) A spinning universe.
(d) A precious universe.

2. When particles hit p-branes, what are produced?
(a) Miniature explosions.
(b) Time bombs.
(c) Extra, multi-dimensional branes.
(d) Nothing is produced.

3. What kind of fluctuations do we have to consider to answer whether or not time travel is possible?
(a) Spacetime fluctuations.
(b) Geological fluctuations.
(c) Quantum fluctuations.
(d) Spatial fluctuations.

4. What was discovered in the 1970s that revealed a natural physical mechanism?
(a) A new sort of symmetry.
(b) A new sort of timewarp.
(c) A new sort of planck.
(d) A new sort of plane.

5. What outline of cosmic strings is flat?
(a) Space-time outline.
(b) Wave outline.
(c) Spatial outline.
(d) Atomic outline.

Short Answer Questions

1. How many articles did Einstein pen that rocketed him to the top of the scientific community?

2. What is a p = 2 brane?

3. What will be preserved if this equation determines the wave function?

4. What did Strominger and Vafa postulate in 1996?

5. Whom did Einstein later marry after his first marriage fell apart?

(see the answer key)

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