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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. What travels at the speed of 186,000 miles per second?
(a) Electrons.
(b) Sound.
(c) Waves.
(d) Light.

2. What shape did Aristotle think the Earth was?
(a) A sphere.
(b) Flat.
(c) A disk.
(d) Oval.

3. Who created the relativity formula that states energy equals mass multiplied by the speed of light squared?
(a) Einstein.
(b) Galileo.
(c) Aristotle.
(d) Newton.

4. For satellites orbiting the earth, time does what in relation to the ground of the earth?
(a) Speeds up.
(b) Remains the same.
(c) Slows down.
(d) Runs almost at the same pace.

5. Scientists start their understanding of the universe with what?
(a) Observations.
(b) Observations and mathematics.
(c) Mathematics.
(d) A theory.

Short Answer Questions

1. Hawking co-authored a paper in what year that explains the big bang theory?

2. What question is among the unanswerable questions children ask, according to the Introduction?

3. Galaxies contain what?

4. The universe is largely made up of what?

5. Groups of atoms create what?

(see the answer key)

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