GEOG 1113L Lab 3 Plate Tectonics
Lab 3: Plate Tectonics
GEOG 1113L – Introduction to Landforms Lab
I. The Saga of Supercontinents
1. What has driven the Earth’s advances and setbacks, explosions of life, and its extinction events?
The driving force has been paleogeography.
2. What mid-20th century discovery solidified the theory of continental drift? What is the
significance of this feature?
The mid-20th century discovery that solidified the theory of continental drift is mid-ocean
ridges. The significance of this feature is where the seafloor is made.
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.
4. Kenorland was one of the Earth’s first supercontinents that formed _2.7_to_2.5_billion__ years
ago and was not much bigger than _Australia_today_.
5. Which supercontinent existed at the same time as the Earth’s first animals? Did they live on the
land?
The first supercontinent was Pangea and the animals did live on land.
6. How many supercontinents were mentioned in the video?
Five were mentioned in this video.
7. What caused the two major extinctions of Pangaea?
Both of the major extinctions were caused by a series of volcanic eruptions on Pangea.
8. How fast are the continents moving?
, II.
The continents are moving 2.5 centimeters a year.
Plate Boundaries
Open the PowerPoint “Lab 3 Part II_Plate Boundaries”. Read through the definitions and hints on the
first slide of the PowerPoint. Draw at least two convergent boundaries and two divergent boundaries on
the map using the “Draw” tab in the second slide of the PowerPoint. Make your divergent boundaries
green and your convergent boundaries red. Draw arrows on each side of your boundaries to indicate
which direction the plates are moving.
Upload your completed PowerPoint activity along with your completed lab assignment document to
the Lab 3 assignment submission folder on iCollege.
This study source was downloaded by 100000901736981 from CourseHero.com on 10-29-2025 03:19:15 GMT -05:00
https://www.coursehero.com/file/249946606/Lab-3-Assignment-Onlinedocx/
Lab 3: Plate Tectonics
GEOG 1113L – Introduction to Landforms Lab
I. The Saga of Supercontinents
1. What has driven the Earth’s advances and setbacks, explosions of life, and its extinction events?
The driving force has been paleogeography.
2. What mid-20th century discovery solidified the theory of continental drift? What is the
significance of this feature?
The mid-20th century discovery that solidified the theory of continental drift is mid-ocean
ridges. The significance of this feature is where the seafloor is made.
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.
4. Kenorland was one of the Earth’s first supercontinents that formed _2.7_to_2.5_billion__ years
ago and was not much bigger than _Australia_today_.
5. Which supercontinent existed at the same time as the Earth’s first animals? Did they live on the
land?
The first supercontinent was Pangea and the animals did live on land.
6. How many supercontinents were mentioned in the video?
Five were mentioned in this video.
7. What caused the two major extinctions of Pangaea?
Both of the major extinctions were caused by a series of volcanic eruptions on Pangea.
8. How fast are the continents moving?
, II.
The continents are moving 2.5 centimeters a year.
Plate Boundaries
Open the PowerPoint “Lab 3 Part II_Plate Boundaries”. Read through the definitions and hints on the
first slide of the PowerPoint. Draw at least two convergent boundaries and two divergent boundaries on
the map using the “Draw” tab in the second slide of the PowerPoint. Make your divergent boundaries
green and your convergent boundaries red. Draw arrows on each side of your boundaries to indicate
which direction the plates are moving.
Upload your completed PowerPoint activity along with your completed lab assignment document to
the Lab 3 assignment submission folder on iCollege.
This study source was downloaded by 100000901736981 from CourseHero.com on 10-29-2025 03:19:15 GMT -05:00
https://www.coursehero.com/file/249946606/Lab-3-Assignment-Onlinedocx/
