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This quiz consists of 5 multiple choice and 5 short answer questions through Cooling the Lava.

Multiple Choice Questions

1. When the author recounts the moments before the 1973 eruption in Heimaey, he describes what?
(a) Vibrations that are not unusual for the region.
(b) An uncanny silence settling over the land.
(c) A loud, deep sound emanating from the volcano.
(d) A violent shaking of the ground.

2. Henry Shreve changes the Mississippi River by introducing what?
(a) Vegetation native to Mexico.
(b) Gambling along the river.
(c) New fish breeds.
(d) Mississippi steamboat.

3. Heimaey is about the same size as:
(a) Washington, D.C. east of the Washington Monument.
(b) Seattle west of the Space Needle.
(c) San Francisco north of Chinatown.
(d) Manhattan south of the Empire State Building.

4. What ultimately happens to the moving piece of mountain on Vestmannaeyjar?
(a) Completely destroys the town and stops.
(b) Hits another mountain and stops.
(c) Falls into the ocean.
(d) Breaks up into smaller, non-moving pieces.

5. Over two centuries of recorded history, Mauna Loa erupts how often on average?
(a) Every three and a half years.
(b) Every twelve years.
(c) Three times a year.
(d) Twice a year.

Short Answer Questions

1. For how many years after the Old River Control begins does the operation appear to be successful?

2. On January 23, 1973, the five thousand residents of Heimaey, the only populated island of Vestmannaeyjar, are threatened by what?

3. A towboat is designed to:

4. Every thousand years or so, the Mississippi River goes through a major shift that leaves behind what?

5. What does the U.S. Army Air Corps do to an insulating vent on Mauna Loa volcano in 1935?

(see the answer key)

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