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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. What may computers also have like human brains?
(a) Multiple dimensions.
(b) Multiple energies.
(c) Parallel processing.
(d) Computational processing.

2. What popular sci-fi show does Hawking refer to when discussing its differences with humanity in a millennium?
(a) Torchwood.
(b) Star Wars.
(c) Star Trek.
(d) Doctor Who.

3. What are wormholes?
(a) Units of spacetime that connect similar regions of space and time.
(b) Molecules of open space.
(c) Holes between which space and time travel.
(d) Tubes of spacetime that connect different regions of space and time.

4. On what scale does Hawking think time travel occurs?
(a) An incredibly low scale.
(b) An incredibly small scale.
(c) An incredibly dense scale.
(d) An incredibly surface-level scale.

5. What does Hawking say might happen if humans don't destroy themselves?
(a) Humans will need to ration food.
(b) Humans will find a way to live on the Earth forever.
(c) Humans will spread to other planets.
(d) Humans will need to procreate rapidly.

Short Answer Questions

1. How do most discussions of time travel begin?

2. What can p-branes predict?

3. As the brain increases in size, what may become slower as it grows more complex?

4. What does the p-brane model show about information?

5. What final state does Hawking wonder if humanity will ever reach?

Short Essay Questions

1. What is a time travel "horizon"?

2. What does it mean for Hawking to think one can "move" positive vacuum energy?

3. What are wormholes?

4. What will happen as brains increase in size?

5. What does Hawking think about the possible technological level of extraterrestrials?

6. How do cosmic strings relate to space-time?

7. What is the Schrodinger equation?

8. What is the grandfather paradox?

9. What might happen if we do not destroy ourselves?

10. How does Hawking begin Chapter Four?

(see the answer keys)

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