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Plate Tectonics Day 2. Just for fun Scrat and Continental Drift-Ice Age 4 Pangaea’s Moving Farther Apart Again Song The Continental Drift Song (Breaking Up Is Hard to Do). Review. Plate tectonic Theory http://www.odsn.de/odsn/services/paleomap/animation.html

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plate tectonics day 2
Plate Tectonics Day 2
  • Just for fun Scrat and Continental Drift-Ice Age 4
  • Pangaea’s Moving Farther Apart Again Song
  • The Continental Drift Song (Breaking Up Is Hard to Do)
review
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

constructive forces help build land
Constructive ForcesHelp build land

There are 3Types of Boundaries

And 1 undifined

Click picture for video

http://www.learner.org/interactives/dynamicearth/plate.html

slide8

Divergent Boundaries

http://www.learner.org/interactives/dynamicearth/slip3.html

  • Boundary between two plates that are moving apart or rifting

 

  • RIFTING causesSEAFLOOR SPREADING
pull apart
Pull Apart

platessplit; hot molten rock from the mantle rises, cools and causes the floor to spread.

Ex. The Mid-Atlantic Ridge

divergent boundary
Divergent Boundary

Iceland Divided

convergent boundaries http www learner org interactives dynamicearth slip2 html
Convergent Boundarieshttp://www.learner.org/interactives/dynamicearth/slip2.html
  • Boundaries between two plates that are colliding

 

collide
Collide

platescrash into one another and form mountains over millions of years.

Ex. The Himalayas

subduction http www learner org interactives dynamicearth slip2 html
Subductionhttp://www.learner.org/interactives/dynamicearth/slip2.htmlSubductionhttp://www.learner.org/interactives/dynamicearth/slip2.html

oceanic plates collide with continental plates, and slide beneath them creating trenches.

Ex. Mt. St. Helens

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