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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 24.

Multiple Choice Questions

1. Vesto Slipher's work at the Lowell Observatory in Arizona led him to discover that distant stars are moving away from us, with the farthest stars moving the fastest, suggesting that the universe is:
(a) Stable.
(b) Shrinking.
(c) Oscillating.
(d) Expanding.

2. According to Bryson, what percentage of all animal and plant life is yet to be discovered?
(a) 97.
(b) 54.
(c) 19.
(d) 32.

3. Harry Hess determined that, in the Atlantic, the ocean floor is:
(a) Expanding.
(b) Super heated.
(c) Super cooled.
(d) Shrinking.

4. A hundred years before Einstein's math analyses confirmed the existence of atoms, this self-educated scientist suggested everything is made up of tiny, unchangeable particles:
(a) Ernest Rutherford.
(b) John Dalton.
(c) Hans Geiger.
(d) George Hadley.

5. The oldest record of life found so far consists of fossilized traces of microbes discovered where?
(a) Finland.
(b) Greenland.
(c) Poland.
(d) Iceland.

Short Answer Questions

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

2. Which of the following is not a layer of Earth?

3. Scientists now believe that life began on Earth how long ago?

4. An asteroid strike on Earth would most likely affect the climate for how long?

5. Arranged side by side, how many atoms can fit across the width of a typical human hair?

(see the answer key)

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