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

Multiple Choice Questions

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

2. If something can escape the event horizon of a black hole, it would be explained by thinking about the behavior of what?
(a) Gravity.
(b) Light.
(c) Particles.
(d) Waves.

3. How far away is our sun from the earth in terms of light?
(a) 9 light minutes.
(b) 8 light months.
(c) 9 light months.
(d) 8 light minutes.

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

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

Short Answer Questions

1. The distance light travels in an earth year is called what?

2. What type of matter might account for gravitational forces that cannot be explained by the mass of our universe?

3. What is one thing particles do when they enter a black hole?

4. Some particles might match up with their anti-particles at what point?

5. Mathematics is the language of what?

(see the answer key)

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