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This quiz consists of 5 multiple choice and 5 short answer questions through Chapters 16-20.

Multiple Choice Questions

1. If you weigh 150 pounds on Earth, how much will you weigh on Jupiter?
(a) Nearly 400 pounds.
(b) About 300 pounds.
(c) 475 pounds.
(d) 525 pounds.

2. When the author had his feet x-rayed as a child, how much radiation did his feet probably receive?
(a) 60 rem.
(b) 50 rem.
(c) 45 rem.
(d) 55 rem.

3. In Chapter 17, how many shuttles had been lost in more than 100 missions?
(a) 2.
(b) 16.
(c) 5.
(d) 9.

4. How much power can a healthy person produce by pedaling a bicycle?
(a) 1 horsepower.
(b) 3/4 horsepower.
(c) 1/7 horsepower.
(d) 1/3 horsepower.

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

Short Answer Questions

1. In the Manhattan Project, how much uranium did scientists believe was needed for a critical mass?

2. When did the U.S. and Russia sign a treaty where they promised to reduce their stockpile of nuclear weapons to less than 6,000 each?

3. What is the Earth's atmosphere?

4. In Chapter 15, how many satellites did the author state would be needed to view the entire globe continuously?

5. When did the United States go after Osama bin Laden in the Tora Bora mountains of Afghanistan?

(see the answer key)

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