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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5 Elementary Particles and the Forces of Nature.

Multiple Choice Questions

1. Edwin Hubble's observation that the universe is expanding supports what theory?
(a) The Universe Expansion theory.
(b) The Big Bang theory.
(c) The Dark Bang theory.
(d) The Dark Matter theory.

2. In the universe, objects move in what type of direction?
(a) In waves.
(b) In straight lines.
(c) In circular motions.
(d) In curved lines.

3. Groups of atoms create what?
(a) Electrons.
(b) Matter.
(c) Protons.
(d) Empty space.

4. The writer of the Introduction hints that time might be able to move in what direction?
(a) Forwards.
(b) Sideways.
(c) A repeat cycle.
(d) Backwards.

5. Why do the theories of quantum mechanics and general relativity need to be unified?
(a) To accurately describe future events.
(b) To accurately describe the fate of the universe.
(c) To accurately describe the very small and the very large.
(d) To accurately calculate observations.

Short Answer Questions

1. Who discovered the theory of gravity?

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

3. Philosophers try to understand the universe using what method?

4. Scientists start their understanding of the universe with what?

5. Galaxies contain what?

(see the answer key)

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