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This quiz consists of 5 multiple choice and 5 short answer questions through Part 4, Chapter 13.

Multiple Choice Questions

1. Using a depth sounder during World War II, Harry Hess discovered that ocean floors:
(a) Have canyons and trenches.
(b) Are flat.
(c) Have swirling sand drifts.
(d) Are too deep to be measured.

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

3. An asteroid strike on Earth would most likely affect the climate for how long?
(a) 5 years.
(b) 10,000 years.
(c) 1 million years.
(d) 500 years.

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

5. Scientists eventually figured out that certain unusual rocks near Manson, Iowa, were not because of ancient volcanic activity as they first surmised, but the result of what?
(a) A huge meteor.
(b) A dynamite explosion.
(c) A mini ice age.
(d) A lightning storm.

Short Answer Questions

1. Halley believed that once scientists figured out the distance from the sun to the Earth, they could then calculate what?

2. How far away is Proxima Centauri from Earth?

3. What components were central to the apparatus that Henry Cavendish used to determine the density of Earth?

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

5. In 1994, scientists observed as the comet Shoemaker-Levy 9 struck Jupiter. One particular comet fragment struck the planet with a force of six million megatons, which is equivalent to approximately what?

(see the answer key)

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