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)

Plate tectonic TheoryPangaea-one big continentProof-fossils, geology, and climatehttp://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 buildingEarthquakesVolcanic activity

ffects of crustal plate movement!

There are 3Types of BoundariesAnd 1 undifined

Click picture for video

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

Boundary between two plates that are moving apart or rifting

RIFTING causes SEAFLOOR

SPREADING

Divergent Boundarieshttp://www.learner.org/interactives/dynamicearth/slip3.html

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

Ex. The Mid-Atlantic Ridge

Iceland Divided

Boundaries between two plates that are colliding

plates crash into one another and form mountains over millions of years.

Ex. The Himalayas

Himalayas

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

Ex. Mt. St. Helens