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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3 The Expanding Universe.

Multiple Choice Questions

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

2. How many miles does light travel in one earth year?
(a) 6 trillion miles.
(b) 5 trillion miles.
(c) 5.88 trillion miles.
(d) 5.5 trillion miles.

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

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

5. The only constant in the universe is what?
(a) Time.
(b) Space.
(c) The speed of light.
(d) The speed of sound.

Short Answer Questions

1. Who discovered the theory of gravity?

2. A location on earth's surface is defined by what?

3. What shape did Aristotle think the Earth was?

4. Who proposed the elliptical orbits of the planets?

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

(see the answer key)

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