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This quiz consists of 5 multiple choice and 5 short answer questions through Chapters 6-10.

Multiple Choice Questions

1. When was the last date that anthrax letters were sent in 2001?
(a) December 3.
(b) October 9.
(c) September 28.
(d) November 16.

2. How much of a rem is in tooth X-rays?
(a) 1/500.
(b) 1/1000.
(c) 1/2000.
(d) 1/750.

3. How long does the radioactivity of potassium-40 last?
(a) 100,000 years.
(b) 9 trillion years.
(c) 2 million years.
(d) A billion years.

4. How many tons of coal did the author say that the U.S. had in reserves in Chapter 7?
(a) About 3 trillion.
(b) 11 billion.
(c) 4 billion.
(d) About 2 trillion.

5. How fast was a plane moving that was used as a weapon in the 9/11 attack?
(a) 634 miles per hour.
(b) 545 miles per hour.
(c) 515 miles per hour.
(d) 600 miles per hour.

Short Answer Questions

1. When did President Reagan announced that he had reduced the total yield of the U.S. nuclear arsenal?

2. In Chapter 6, what was the name of Muller's student in his anecdote?

3. In Chapter 7, when oil would rise to what price per barrel did countries take their coal reserves and convert them to oil?

4. What percent of the energy of gasoline is carried by the best rechargeable batteries?

5. When the author had his feet x-rayed as a child, how much radiation did his feet probably receive?

(see the answer key)

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