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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. The universe has how many dimensions?
(a) Two.
(b) Three.
(c) Four.
(d) Five.

2. When Hubble discovered other galaxies, in what direction were they moving?
(a) Towards each other.
(b) Away from earth.
(c) Towards earth.
(d) Away from each other.

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

4. Who created the idea that a star can collapse and become a black hole?
(a) Roger Penrose.
(b) Robert Wilson.
(c) Alexander Friedmann.
(d) Arno Penzias.

5. Hawking's model of the universe says the universe will end how?
(a) It will end because all matter will disappear.
(b) It will end in a big explosion.
(c) It will never end.
(d) It will end because black holes will suck all matter in.

Short Answer Questions

1. Stars without enough mass to become a black hole can become what?

2. Unlike children, scientists and philosophers, most adults use what to explain away the fundamental questions of the universe?

3. Groups of atoms create what?

4. What is the purpose of an arrow of time?

5. Who demonstrated that an atom is made up of electrons orbiting a nucleus made up of protons?

(see the answer key)

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