Download Plate Tectonics Activity on Dynamic Earth

Plate Tectonics (The Dynamic Earth)
Go to the following website to begin:
http://www.mnh.si.edu/earth/main_frames.html
Review:
Instructions:
-Click on Plate Tectonics
Plate Tectonics
-Click on “Visit the Orientation Theater”
-Watch the video, look at “Plate Tectonics 101” for more information
1. When did the supercontinent begin to separate?
2. What is a tectonic plate? What percentage of Earth’s radius do they make up?
3. Why do plates move? (two part answer)
4. Do all plates move at the same speed? How fast and in which direction is the North American
Plate moving?
5. Where are the majority of the spreading ridges found?
6. Why do continents rise above the ocean floor? What is each made of?
Plates Move Apart
-Click on Plates Move Apart
7. Where are the world’s longest mountain ranges located?
8. What causes plates to pull apart from one another?
Plates Come Together
-Click on Plates Come Together
-Click on The Himalaya
9. how were the Himalaya created?
-Click on the Cascade Range
10. What happens when one plate descends below another?
-Review the plate boundaries by clicking on the “Plates Move Apart”, “Plates Come
Together” and “Plates Pass By”
Watch the Mt. St. Helens eruption
11. What were some of the effects it had on the surrounding areas?
Plates Pass By
-Click on Plates Pass By
12. What is happening in California?
13. What happened on April 18, 1906?