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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 17.

Multiple Choice Questions

1. Halley believed that once scientists figured out the distance from the sun to the Earth, they could then calculate what?
(a) Weight of the sun.
(b) Distances to distant stars.
(c) Weight of Earth.
(d) Distances to other planets.

2. Compared to at sea level, oxygen at a few thousand feet above sea level is:
(a) Purer.
(b) Thinner.
(c) Heavier.
(d) More plentiful.

3. Today, scientists know that radiation in high doses is:
(a) Healthy.
(b) Tolerable.
(c) Safe.
(d) Toxic.

4. What organization opposed geologist Clair Patterson and his campaign?
(a) Swimming Pool Safety Institute.
(b) American Academy of Pediatrics.
(c) American Dairy Association.
(d) American Petroleum Institute.

5. The strongest earthquake ever recorded was measured off the coast of Chile in 1960. What did it measure on the Richter scale?
(a) 8.9.
(b) 9.5.
(c) 7.8.
(d) 10.2.

Short Answer Questions

1. If Earth did not have an atmosphere, it would be what?

2. What is the highest elevation that humans are able to live and survive on Earth continuously without special accommodations?

3. Approximately how many miles are there from Earth's surface to its core?

4. Invented in the 1930s, chlorofluorocarbons (CFCs) have proven to be damaging to:

5. In 1971, Mike Voorhies discovered an amazing fossil bed in Nebraska full of skeletons of prehistoric animals killed 12 millions years ago. How did they die?

(see the answer key)

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