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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 20.

Multiple Choice Questions

1. According to the Reverend William Buckland, the biblical reference to "in the beginning" with regards to the formation of Earth could refer to:
(a) A particular era.
(b) Myths and legends.
(c) Exactly seven days.
(d) Millions and millions of years.

2. According to the author, humans today have 625 percent more what in their bloodstream compared to previous generations?
(a) Alcohol.
(b) Chlorofluorocarbons.
(c) Lead.
(d) Pesticides.

3. What are so small that the dot on the letter "i" could hold 5 billion of them?
(a) Viruses.
(b) Protons.
(c) Quarks.
(d) Bacteria.

4. What percentage of the human body consists of water?
(a) 32.
(b) 14.
(c) 65.
(d) 97.

5. Approximately how many bacteria live on a square centimeter of human skin?
(a) 350.
(b) 7,500.
(c) 100,000.
(d) 4,000,000.

Short Answer Questions

1. Who postponed his honeymoon in order to write a scientific paper about the movements of electrons?

2. In 2003, NASA came up with an estimated age of the universe. What was it?

3. Max Planck ignored those who urged him to avoid physics and ended up doing groundbreaking work on:

4. With scientists having found so many dinosaur bones by the dawn of the twentieth century, what did they conclude about the age of Earth?

5. How many elements occur naturally on Earth?

(see the answer key)

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