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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. According to Popper, what happens if positivism is true?
(a) We lose all negativity.
(b) We cannot say what space is.
(c) We cannot believe in time.
(d) We cannot say what time is.

2. How did physicists respond to Hawking and Penrose's work?
(a) They were insanely horrified.
(b) They disliked the idea.
(c) They were mystified.
(d) They were delighted.

3. By what year was Einstein famous?
(a) 1988.
(b) 1907.
(c) 1899.
(d) 1909.

4. Who produced the theory about curved spaces?
(a) Professor Marx.
(b) Georg Reimann.
(c) Harvey Dent.
(d) George Markowitz.

5. What is one of the twentieth century's greatest discoveries?
(a) The universe is expanding.
(b) The universe is collapsing.
(c) There are extraterrestrials.
(d) The earth will be uninhabitable in fifty years.

Short Answer Questions

1. What may be a law of nature?

2. What does Hawking believe we should try to understand?

3. What paradox does time travel generate?

4. When was absolute time overthrown as an idea?

5. What can one not curve space without also curving?

(see the answer key)

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