Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Tectonic Plates
http://www.scotese.com/pangeanim.htm Evidences Process of Discovery Harry Hess discovered the Mid-Atlantic Ridge, a mountain range on the sea floor, while using sonar for navy-related purposes during World War II. Upon further investigation, he found that the rock progressively got older as he traveled farther from the Mid-Atlantic Ridge. Evidences He used core samples of rock from the ocean floor to prove the age of the rock increased with the distance from the Mid-Atlantic Ridge. His discovery supported the theory of Continental Drift because it explained that the continents, or tectonic plates, moved as a result of the ocean floor expanding, which pushed the continents in different directions. Reverse Polarity Another part of Harry Hess' discovery was that the rock had rifts in opposite directions. His find showed that Earth's magnetism had shifted throughout history, a process called reverse polarity, or reverse magnetism. Pictures Shapes of the continents and how they would fit together
Glacial deposits in warm areas
Fossils of plants and animals Demonstration An animation of how Continental Drift and Sea Floor Spreading are connected:
http://www.scotese.com/sfsanim.htm To see an animation of Reverse Polarity: