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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6, Our Future?, Star Trek or Not?.

Multiple Choice Questions

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

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

3. What can one not curve space without also curving?
(a) Functions.
(b) Time.
(c) Spacetime.
(d) Gravity.

4. How could this energy density be created?
(a) By creating new weights for each energy density.
(b) By taking out virtual particles in a closed loop.
(c) By separating virtual particles from real particles.
(d) By dividing the molecules into fragments and then reassembling them.

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

Short Answer Questions

1. What is intuitive to think about the "ground state" or stationary state of an object?

2. What made DNA obsolete as the only source of information about humans?

3. What are wormholes?

4. How did religious leaders respond to Hawking and Penrose's work?

5. What are singularities?

(see the answer key)

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