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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 9 The Arrow of Time.

Multiple Choice Questions

1. Some particles might match up with their anti-particles at what point?
(a) When they escape a black hole.
(b) When they get crushed in a black hole.
(c) When they fall into a black hole.
(d) Before they enter a black hole.

2. What star system has a fairly certain black hole?
(a) Cygnus X-1.
(b) Lythia X-1.
(c) Pegasus X-2.
(d) Marlin X-2.

3. How does Hawking define scientific theory?
(a) A model of the universe that meets common sense expectations.
(b) A model of the universe made up of molecules.
(c) A model of the universe that predicts some events, but isn't accurate.
(d) A model of the universe with a set of rules.

4. What theory best describes the singularities of black holes and big bangs?
(a) Theory of everything.
(b) Quantum mechanics.
(c) Molecular engineering.
(d) Theory of relativity.

5. Heisenberg and Erwin Shrodinger developed what reformulation of standard mechanics?
(a) Quantum mechanics.
(b) Atomic mechanics.
(c) Relativity mechanics.
(d) Theoretical mechanics.

Short Answer Questions

1. A black hole has zero what?

2. To illustrate the concept of disorder in a system, Hawking uses what example in Chapter 9?

3. To observe black holes you must observe what?

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

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

(see the answer key)

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