GEOG 1113L
LAB 3
Assignment Online
Plate Tectonics
Georgia State University
, lOMoARcPSD|51648332
Lab 3: Plate Tectonics
GEOG 1113L – Introduction to Landforms Lab
Name: Noah Garland
I. The Saga of Supercontinents
1. What has driven the Earth’s advances and setbacks, explosions of life, and its extinction
events?(5 points)
Paleogeography
2. What mid-20th century discovery solidified the theory of continental drift? What is the
significance of this feature? (9 points)
Seafloor spreading is what solidified the theory of continental drift. It showed that new
oceanic crust forms at mid-ocean ridges and pushes continents apart.
3. Another primary mechanism of plate tectonics is called Subduction, where oceanic crust slides
under continental crust and begins to melt and mix with the mantle.( 3 points)
4. Kenorland was one of the Earth’s first supercontinents that formed 2.5 to 2.7 million years ago
and was not much bigger than Australia. (6 points)
5. Which supercontinent existed at the same time as the Earth’s first animals? Did they live on the
land? (6 points)
Pannotia was the supercontinent that existed at the same time as the Earth’s first animals, and
they lived in the coastal waters from the poles to the equator.
6. How many supercontinents were mentioned in the video? (3 points)
There were five mentioned which were Pangaea, Rodinia, Columbia, Pannotia and Kenorland.
7. What caused the two major extinctions of Pangaea? (3 points)
The Permian-Triassic extinction (The Great Dying) and The Triassic-Jurassic Extinction.
8. How fast are the continents moving? (4 points)
2.5 Centimeters a Year
Downloaded by Benjamin Luca ()
LAB 3
Assignment Online
Plate Tectonics
Georgia State University
, lOMoARcPSD|51648332
Lab 3: Plate Tectonics
GEOG 1113L – Introduction to Landforms Lab
Name: Noah Garland
I. The Saga of Supercontinents
1. What has driven the Earth’s advances and setbacks, explosions of life, and its extinction
events?(5 points)
Paleogeography
2. What mid-20th century discovery solidified the theory of continental drift? What is the
significance of this feature? (9 points)
Seafloor spreading is what solidified the theory of continental drift. It showed that new
oceanic crust forms at mid-ocean ridges and pushes continents apart.
3. Another primary mechanism of plate tectonics is called Subduction, where oceanic crust slides
under continental crust and begins to melt and mix with the mantle.( 3 points)
4. Kenorland was one of the Earth’s first supercontinents that formed 2.5 to 2.7 million years ago
and was not much bigger than Australia. (6 points)
5. Which supercontinent existed at the same time as the Earth’s first animals? Did they live on the
land? (6 points)
Pannotia was the supercontinent that existed at the same time as the Earth’s first animals, and
they lived in the coastal waters from the poles to the equator.
6. How many supercontinents were mentioned in the video? (3 points)
There were five mentioned which were Pangaea, Rodinia, Columbia, Pannotia and Kenorland.
7. What caused the two major extinctions of Pangaea? (3 points)
The Permian-Triassic extinction (The Great Dying) and The Triassic-Jurassic Extinction.
8. How fast are the continents moving? (4 points)
2.5 Centimeters a Year
Downloaded by Benjamin Luca ()
