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

Multiple Choice Questions

1. How many black holes are estimated per cubic light year of space?
(a) 400.
(b) 350.
(c) 300.
(d) 450.

2. Hawking believes that if science does discover a complete theory of the universe, then humans will have come to know what?
(a) The nature of infinity.
(b) When humanity will end.
(c) If there is an end of time.
(d) The mind of God.

3. Mathematics is the language of what?
(a) Natural sciences.
(b) Physics.
(c) How things work in the universe.
(d) Engineers.

4. The uncertainty principle says that certain pairs of quantities (like position and velocity of a particle) cannot be determined with what?
(a) Accuracy.
(b) Experiments.
(c) Mathematics.
(d) Relational theory.

5. How close is the closest star, other than the sun, to earth?
(a) About 4 light years distant.
(b) About 5 light years distant.
(c) About 5 light years distant.
(d) About 3 light years distant.

Short Answer Questions

1. The idea of the big bang arises from what phenomena?

2. What force is the weakest of the four categories of forces?

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

4. Using low level radiation to detect black holes is in what stage of research?

5. Gravitational force is always what?

(see the answer key)

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