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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 did Einstein wish people to abandon concerning time?
(a) A general notion of the ratio of time to speed.
(b) That time equals money.
(c) A universal notion of time.
(d) The idea of the 24 hour clock.

2. How did the universe initially expand?
(a) Fully and then not at all.
(b) Rapidly and then more slowly.
(c) Increasingly quick.
(d) Markedly slow.

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

4. What is vacuum energy's force inverse to?
(a) Mass.
(b) Acceleration.
(c) Force.
(d) Weight.

5. What is one reason Hawking takes multiple dimensions seriously?
(a) Conclusive relationships between plane models.
(b) Expected relationships between diverse string thories.
(c) Unexpected relationships between multiple dimensions.
(d) Unexpected relationships between various string models.

Short Answer Questions

1. What partially restores determinism as a view?

2. What laws might allow space-time to warp to allow a spaceship to travel through the past?

3. What did Einstein assume about scientific laws?

4. Where did Einstein move in 1914?

5. What kind of explanation does Hawking give for how it might be possible to travel through time?

(see the answer key)

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