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

Multiple Choice Questions

1. Why do researchers want to find black holes?
(a) To prevent the orbits of earth and other possible earth-like worlds from entering them.
(b) To explain gravitational forces that the mass of the universe cannot explain.
(c) To explain strage gravitational orbits of planets in bianary star systems.
(d) To prevent space travelers from entering them.

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) The mind of God.
(c) When humanity will end.
(d) If there is an end of time.

3. What else can we not see, besides black holes?
(a) Photon matter.
(b) Black matter.
(c) Light waves.
(d) Clear matter.

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

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

Short Answer Questions

1. Black holes are speculated to be clumped together due to what?

2. A black hole has zero what?

3. If something can escape the event horizon of a black hole, it would be explained by thinking about the behavior of what?

4. The uncertainty principle says that certain pairs of quantities (like position and velocity of a particle) cannot be determined with what?

5. When Hubble discovered other galaxies, in what direction were they moving?

(see the answer key)

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