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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 11 Conclusion.

Multiple Choice Questions

1. Laplace, at the beginning of the 19th century, postulated what idea?
(a) Scientific communication.
(b) Scientific knowledge.
(c) Scientific experiments.
(d) Scientific determinism.

2. How many miles does light travel in one earth year?
(a) 5 trillion miles.
(b) 6 trillion miles.
(c) 5.88 trillion miles.
(d) 5.5 trillion miles.

3. Using low level radiation to detect black holes is in what stage of research?
(a) Exploratory.
(b) Theory.
(c) Testing.
(d) Analytical.

4. The idea of the big bang arises from what phenomena?
(a) The decreasing universe.
(b) The expanding universe.
(c) The theory of light.
(d) The theory of relativity.

5. What is one question we ask to make sense of the world around us?
(a) Why is the world the way it is?
(b) Why do I think the way I do?
(c) What do I do on earth?
(d) Why am I here?

Short Answer Questions

1. How many black holes are estimated per cubic light year of space?

2. What else can we not see, besides black holes?

3. Hawking calls the possibility of the universe collapsing "the big ____?"

4. If there is a grand unified theory, according to Hawking it would be the ultimate triumph of what?

5. Gravitational force is always what?

(see the answer key)

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