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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. When oceanographer Jacques Piccard and a U.S. Navy sailor descended more than 35,000 feet to the deepest part of the world's oceans, what happened?
(a) They startled a flat fish upon touching down.
(b) They saw the remains of a sunken ship.
(c) The power went out in their ocean capsule.
(d) They were stranded there for days and nearly died.

2. By volume, how much of the Earth's habitable space is covered by water?
(a) 87.75 percent.
(b) 99.5 percent.
(c) 71.75 percent.
(d) 80.5 percent.

3. According to James Ussher, an Archbishop of the Church of Ireland who was alive in the 1600s, Earth had been created:
(a) On October 23, 4004 B.C.
(b) On January 1, 10,000 B.C.
(c) Millions of years ago.
(d) In an instant.

4. Who postponed his honeymoon in order to write a scientific paper about the movements of electrons?
(a) Ernest Rutherford.
(b) Niels Bohr.
(c) Albert Einstein.
(d) James Chadwick.

5. Scientists now believe that life began on Earth how long ago?
(a) 7.35 trillion years.
(b) 3.85 billion years.
(c) 6.25 thousand years.
(d) 5.75 million years.

Short Answer Questions

1. In times past, Earth was:

2. What percentage of all existing water is fresh water?

3. About how many stars can be seen from Earth using a two-inch telescope?

4. Tired of climbing hills to study clouds, C. T. R. Wilson invented what?

5. Our universe is at least how many light-years wide?

(see the answer key)

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