Plate+Tectonics+HW

Plate+Tectonics+HW - Describe. (3pts) Plates are destroyed...

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Plate Tectonics HW 1. What is Pangea? (1pts) Proposed supercontinent. It began breaking apart into smaller continents 200 million years ago, which then drifted into their current positions. 2. What is “Ring of Fire”? (1pts) An area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. 3. Which is not considered a plate boundary? (1pts) a. Divergent b. Transform c. Lateral d. Convergent 4. What is the process that leads to formation of magma in divergent plate movements? Describe. (2pts) The plates form and spread apart along divergent boundaries. Magma rises up between two plates, forces them to spread apart, and cools to form new rock on the edges of both plates 5. What is the process that leads to formation of magma in convergent plate movements?
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Unformatted text preview: Describe. (3pts) Plates are destroyed along convergent plate boundaries where the edge of one plate may subduct (descend beneath the edge of another plate) back into the mantle or both plates may crumple and merge to form a mountain belt. Results from flux melting from addition of fluids. 6. Write down the types of plate boundaries and how do they differ from each other? (3 pts) Divergent-two plates move apart. Results in upwelling of material from the mantle to create new oceanic crusts. Decompression melting occurs when there is a decrease in pressure and an increase in temperature. Convergent- two plates moving toward each other. One plate moves beneath another plate. Transform-two plates slide past each other. Transform fault between oceanic plates...
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This note was uploaded on 11/15/2011 for the course GLG 111 taught by Professor Kuentz during the Fall '05 term at Miami University.

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Plate+Tectonics+HW - Describe. (3pts) Plates are destroyed...

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