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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Chapter 7.

Multiple Choice Questions

1. The British astronomer Martin Rees hypothesizes that there could be an infinite number of what?
(a) Speeds of light.
(b) Electromagnetic frequencies.
(c) Subatomic particles.
(d) Different universes.

2. Had the universe formed just slightly differently:
(a) Planets would be flat instead of round.
(b) Mankind would not exist.
(c) Our solar system would have ten times more planets.
(d) Earth would have seven moons.

3. James Hutton believed that the natural forces forming the geology of Earth are:
(a) Now extinct.
(b) Still at work.
(c) Impossible to classify.
(d) Random and unpredictable.

4. James Hutton was a geologist who wondered why:
(a) There are no polar bears in Antarctica.
(b) Polar ice caps do not melt.
(c) The Great Barrier Reef is off the coast of Australia.
(d) Seashell fossils are found on mountaintops.

5. According to Einstein's theories, what is the nature of space?
(a) It curves.
(b) It is a straight line.
(c) It has missing points.
(d) It is a flat plane.

Short Answer Questions

1. What components were central to the apparatus that Henry Cavendish used to determine the density of Earth?

2. Our universe is at least how many light-years wide?

3. When was Pluto discovered?

4. When radiation was first discovered, it was sometimes added to:

5. How do today's professional astronomers search for supernovae?

(see the answer key)

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