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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. In addition to being a seventeenth-century astronomer, Christopher Wren designed:
(a) Swords.
(b) Cathedrals.
(c) Eyeglasses.
(d) Clothes.

2. Which of the following is NOT a quark "flavor?"
(a) Charm.
(b) Inverted.
(c) Down.
(d) Strange.

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

4. Scientists are aware of at least how many galaxies in the universe?
(a) 110 thousand.
(b) 90 trillion.
(c) 140 billion.
(d) 20 million.

5. Most life on Earth is based on what element?
(a) Hydrogen.
(b) Carbon.
(c) Magnesium.
(d) Iron.

Short Answer Questions

1. What is an extremophile?

2. How quickly can bacteria create a new generation?

3. According to Einstein's theories, what is the nature of space?

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

5. The British astronomer Martin Rees hypothesizes that there could be an infinite number of what?

(see the answer key)

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