plate tectonics day3
DESCRIPTION
Plate Tectonics Day3. Review. Plate tectonic Theory http://www.odsn.de/odsn/services/paleomap/animation.html Surface of earth made of rigid “plates” Float on asthenosphere and is in constant motion Explains Drifting continents Mountain building Earthquakes Volcanic activity. - PowerPoint PPT PresentationTRANSCRIPT
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Plate Tectonics Day3
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Review
• Plate tectonic Theoryhttp://www.odsn.de/odsn/services/paleomap/animation.html
• Surface of earth made of rigid “plates” • Float on asthenosphere and is in constant motion• Explains
Drifting continents
Mountain building
Earthquakes
Volcanic activity
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Effects of crustal plate movement!
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Constructive ForcesHelp build land
There are 3Types of Boundaries
Click picture for video
http://www.learner.org/interactives/dynamicearth/plate.html
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Convergent Boundaries http://www.learner.org/interactives/dynamicearth/slip2.html
• Boundaries between two plates that are colliding
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Subduction http://www.learner.org/interactives/dynamicearth/slip2.html
oceanic plates collide with continental plates, and slide beneath them creating trenches.
Ex. Mt. St. Helens•http://player.discoveryeducation.com/index.cfm?guidAssetId=489D30FF-EC27-483E-825D-A5FA582A57E4
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The ocean floor plunges into deep underwater canyons called deep-ocean trenches.
Subduction takes place in deep-ocean trenches. Subduction is the process by which the ocean
floor sinks beneath a deep-ocean trench and back into the mantle.
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The RING of fireClick on picture
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Hot Spots
hot material rises up through the mantle, heats up the lithosphere and forms a volcano.
Once the plate passes over this hotspot, the volcano becomes inactive.
Ex. Hawaiihttp://player.discoveryeducation.com/index.cfm?guidAssetId=C485747E-A115-41D6-9D42-D6FFE6CA3914
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Discovery Educationhttp://player.discoveryeducation.com/index.cfm?guidAssetId=8565EFBE-6F25-42BF-A60C-0BEA7F34ADCA
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Mount Nyiragongo VideoLife near the volcano
http://youtu.be/rZLSvO6vJZ0More videos-no sound
http://youtu.be/W_meqhjQxb8
http://youtu.be/6qMYmNg6K_8