Plate Tectonics An original Power Point presentation by Lindsey Durham.
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Transcript of Plate Tectonics An original Power Point presentation by Lindsey Durham.
![Page 1: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/1.jpg)
Plate Tectonics
An original Power Point presentation by Lindsey Durham
![Page 2: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/2.jpg)
Plate Tectonics
• The crust of the Earth is not an unbroken shell but is made of plates (slabs of rock) that move.
![Page 3: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/3.jpg)
Plate Tectonics
• Continental Drift– The plates are still moving today
• 4 inches/year
![Page 4: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/4.jpg)
Plate Tectonics
• 3 Types of Plate Movements– Divergent– Convergent– Transform
![Page 5: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/5.jpg)
Plate Tectonics
• Divergent plates– Occurs when 2
oceanic plates move apart.
– Magma from the mantle rises through the new crack.
– The magma cools and new ocean floor is created.
– This is called sea floor spreading.
![Page 6: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/6.jpg)
Plate Tectonics
• Convergent Plates• 2 plates push against
each other.
– 3 types• 2 Continental plates• 1 Continental and 1 Oceanic• 2 Oceanic plates
![Page 7: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/7.jpg)
Plate Tectonics
• 2 Continental– The 2 plates push
against each other making folds which create mountains.
![Page 8: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/8.jpg)
Plate Tectonics
• 1 Continental and 1 Oceanic– Subduction occurs
• The oceanic plate slides under the continental plate because it is lighter.
• The impact causes crack in which magma flows up through.
• The cooled magma builds up creating volcanoes.
![Page 9: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/9.jpg)
Plate Tectonics
• 2 Oceanic Plates– Subduction occurs and magma flows up the
crack forming volcanoes.
![Page 10: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/10.jpg)
Plate Tectonics
• Transform Plates– 2 plates slide against each other– Fault lines created
• Cracks in the earth’s crust
– When the plates move the cause earthquakes
![Page 11: Plate Tectonics An original Power Point presentation by Lindsey Durham.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e685503460f94b6461f/html5/thumbnails/11.jpg)
Plate Tectonics
• Tsunamis– Underwater earthquakes that can cause
HUGE waves.