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This quiz consists of 5 multiple choice and 5 short answer questions through Part 4, Chapter 13.

Multiple Choice Questions

1. When radiation was first discovered, it was sometimes added to:
(a) Stews and casseroles.
(b) Drinking water.
(c) Gasoline and alcohol.
(d) Toothpastes and laxatives.

2. How far away is Proxima Centauri from Earth?
(a) 390 million times farther than Venus.
(b) 120 million times farther than our sun.
(c) 100 million times farther than our moon.
(d) 700 million times farther than Mars.

3. Sir Isaac Newton wrote "Mathematical Principles of Natural Philosophy," which explains his laws of what?
(a) Quantum physics.
(b) Attraction.
(c) Electromagnetic interference.
(d) Motion and gravity.

4. 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 other planets.
(c) Distances to distant stars.
(d) Weight of Earth.

5. About how many stars can be seen from Earth using a two-inch telescope?
(a) 30,000.
(b) 3,000.
(c) 300,000.
(d) 3 million.

Short Answer Questions

1. Which of the following is not a major geological era?

2. In addition to being a seventeenth-century astronomer, Christopher Wren designed:

3. According to the author, humans today have 625 percent more what in their bloodstream compared to previous generations?

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

5. Scientists are aware of at least how many galaxies in the universe?

(see the answer key)

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