GEOG 1113L LAB 3 Assignment Online Plate Tectonics Georgia State University

GEOG 1113L
LAB 3
Assignment Online
Plate Tectonics

Georgia State University

, lOMoAR cPSD| 51648332




Lab 3: Plate Tectonics
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GEOG 1113L – qw qw




Introduction to Landforms Lab Name: Noah G
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arland

I. The Saga of Supercontinents
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1. What has driven the Earth’s advances and setbacks, explosions of life, and its exti
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nction events?(5 points) q w qw




Paleogeography

2. What mid- qw




20th century discovery solidified the theory of continental drift? What is the si
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gnificance of this feature? (9 points) qw qw qw qw qw




Seafloor spreading is what solidified the theory of continental drift. It sho
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wed that new oceanic crust forms at mid-
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ocean ridges and pushes continents apart. qw qw qw qw qw




3. Another primary mechanism of plate tectonics is called Subduction, where oceanic cr
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ust slides under continental crust and begins to melt and mix with the mantle.( 3 poin
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ts)

4. Kenorland was one of the Earth’s first supercontinents that formed 2.5 to 2.7 million
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years ago and was not much bigger than Australia. (6 points)
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5. Which supercontinent existed at the same time as the Earth’s first animals? Did they live
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on the land? (6 points)
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Pannotia was the supercontinent that existed at the same time as the Earth’s
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first animals, and they lived in the coastal waters from the poles to the equ
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ator.
6. How many supercontinents were mentioned in the video? (3 points)
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There were five mentioned which were Pangaea, Rodinia, Columbia, Pannotia and Kenorl
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and.

7. What caused the two major extinctions of Pangaea? (3 points)
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The Permian-Triassic extinction (The Great Dying) and The Triassic-Jurassic Extinction.
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8. How fast are the continents moving? (4 points)
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2.5 Centimeters a Year qw qw qw




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