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

Multiple Choice Questions

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

2. What is one thing particles do when they enter a black hole?
(a) Become destroyed.
(b) Cause the emission of other particles.
(c) Stop emitting light.
(d) Become very dense.

3. Gravitational force is always what?
(a) Present.
(b) Repulsive.
(c) Attractive.
(d) Negated by other forces.

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

5. What force is the weakest of the four categories of forces?
(a) Gravity.
(b) Energy.
(c) Attraction.
(d) Light.

Short Answer Questions

1. Black holes can capture matter particles and what other type of particles?

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

3. In order to explain how black holes become a big bang, Hawking needs to include what?

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

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

(see the answer key)

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