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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 25.

Multiple Choice Questions

1. In the 1700s, people were finding holes in theories. For example, if the thoughts on erosion were completely correct, then:
(a) Sand would be ground to fine powder.
(b) There would be no mountains, only smooth hills.
(c) All farmland would have been washed away.
(d) Icebergs would have eroded long ago.

2. According to the Caltech physicist Richard Feynman, the most important discovery ever made is what?
(a) Penicillin.
(b) Atoms.
(c) Pasteurization.
(d) Electricity.

3. Species appear to exist, on average, how long?
(a) 4 million years.
(b) 12 thousand years.
(c) 9 billion years.
(d) 780 thousand years.

4. How deep is Earth's atmosphere?
(a) 5 miles.
(b) 30 miles.
(c) 800 miles.
(d) 120 miles.

5. What is found at the very center of the Earth?
(a) Liquid inner core.
(b) Frozen core.
(c) Solid inner core.
(d) Gaseous core.

Short Answer Questions

1. What campaign did geologist Clair Patterson take on?

2. Who was Robert Fitzroy?

3. In a span of just 20 years, the number of known moons in the solar system grew from:

4. The Geiger counter is a:

5. The author states that extinction seems to be:

(see the answer key)

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