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

2. When radiation was first discovered, people thought it must have:
(a) An extraterrestrial origin.
(b) Been caused by thunderstorms.
(c) Healthful properties.
(d) High toxicity.

3. When French physicist Henri Becquerel accidentally left a packet of uranium salts on a photographic plate, what happened?
(a) The plate became magnetic.
(b) The plate rusted.
(c) The salt crystals melted into the plate.
(d) An emission from the salts ruined the plate.

4. Richard Owen coined the term paleontology as the study of prehistoric life forms and called the giant animals dinosaurian, meaning:
(a) Enormous creature.
(b) Terrible lizard.
(c) Ancient animal.
(d) Large reptile.

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

Short Answer Questions

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

2. Halley believed that once scientists figured out the distance from the sun to the Earth, they could then calculate what?

3. Between 1980 and 2003, how many supernovas did the Reverend Robert Evans of Australia discover using a simple backyard telescope?

4. About how many stars are visible to the naked eye from Earth?

5. In 1903, who won the Nobel Prize in physics for discovering radioactivity?

(see the answer key)

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