Earthquakes, Volcanoes, and Mountains Practice Questions
Review the following concepts: Earthquakes, Volcanoes, and Mountains
1. Of the different kinds of margins (edges) between plates, which kind is usually of least concern for humans?
a. collision margin
b. subduction zone
c. mid-ocean ridge
d. transform margin
2. If one earthquake measures on the Richter scale and another earthquake is Richter 5, how much larger is the second earthquake, compared to the first?
a. 900 times
b. 30 times
c. 100 times
d. 2 times
3. What country or state was devastated by an earthquake in December 2004?
4. What type of motion between plates best describes what is happening to rocks on two sides of a plate boundary during earthquakes?
5. People are killed by earthquakes primarily because of what?
a. poisonous gases are released
b. the ground shakes violently
c. buildings collapse
d. roads are tossed and twisted
6. The Hawaiian Islands are NOT an example of which one of the following?
a. shield volcanoes
b. a plate moving over a hotspot
d. lava flows
7. The difference between lava and magma is which one of the following?
a. Lava comes from stratovolcanoes.
b. Lava is hotter.
c. Magma creates pyroclastic flows.
d. Magma is deeper.
8. Crater Lake in Oregon is an example of which one of the following?
a. shield volcano
d. pyroclast cup
9. Lava will flow more if it has what characteristics?
a. low temperature and high silica
b. low temperature and low silica
c. high temperature and high silica
d. high temperature and low silica
10. When Mount Saint Helens exploded, you would best guess that the eruption resulted in which of the following?
a. a new hotspot
b. a pyroclastic flow
c. global warming
d. a tsunami
11. Which pair of mountain ranges was formed from subduction collision margins, and are therefore partially volcanic?
a. Himalayas and Andes
b. Cascades and Alps
c. Alps and Himalayas
d. Cascades and Andes
12. Which of the following is NOT true?
a. All oceanic crust rock is younger than the oldest continental rocks.
b. Some oceanic crust rock is older than the oldest continental rocks.
c. Oceanic crust rock is more dense than continental rocks.
d. Some oceanic crust rock is more dense than continental rocks.
13. The Appalachian Mountains are lower than the Himalayan Mountains because of which of the following?
a. They are younger.
b. Their uplift was not as great.
c. They are older.
d. They have had more subduction.
14. Which of the following mountains resulted from a continental collision zone about 400 million years ago?
15. Mount Everest is about 29,000 feet high. If it has been uplifting as part of the Himalayan mountain range for about 20 million years, calculate how many inches per year of uplift has occurred.
1. c. mid-ocean ridge
2. a. 900 times
3. d. Indonesia
4. c. jerks
5. c. buildings collapse
6. b. a plate moving over a hotspot
7. d. Magma is deeper.
8. c. caldera
9. d. high temperature and low silica
10. b. a pyroclastic flow
11. d. Cascades and Andes
12. b. Some oceanic crust rock is older than the old est continental rocks.
13. c. They are older.
14. b. Appalachians
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