Part of the volcanism module-most eruptions

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Reference no: EM13241281

Volcanism Quiz (part of the Volcanism module)

1. Most eruptions

(a) create mountain chains (b) /don’t build volcanoes (c) occur from hotspots

2. The majority of Earth's volcanism

(a) /occurs underwater at divergent plate boundaries (b) occurs on land at convergent plate boundaries (c) occurs on land at divergent plate boundaries (d) occurs underwater at convergent plate boundaries

3. The most common volcanism

(a) is not an earth-shattering event (b) is the explosive strato-volcano (c) occurs at convergent plate boundaries (d)/ none of these

4. In subduction zones

(a) little noticeable volcanic activity occurs (b) /magma is created when the water-laden ocean floor plunges beneath an adjoining plate (c) coral reefs form (d) oil deposits form

5. The geometry of subduction means that

(a)/ volcanoes tend to appear in long arcs (b) only transverse faults are formed (c) hot spots occur at regular intervals along the fault line (d)all of the above

6. The fewest volcanoes form

(a) at divergent plate boundaries (b) at submergent zones (c)/ over hot spots

7. Geologists are most uncertain about

(a) how magma is formed (b) how hot spots form (c) /what caused flood volcanism.

8. When magma cools and solidifies it becomes

(a)/ igneous rock (b) sedimentary rock, (c) igneous rock

9. When lava cools and solidifies, it becomes

(a) igneous rock (b) sedimentary rock, (c) igneous rock

10. The cause of lava eruption is

(a) the heat of the lava (b)/ the release of gases formed in the lava (c) the chemical structure of the lava (d) none of these.

Reference no: EM13241281

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