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13 Cards in this Set
- Front
- Back
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Continental drift |
Three proposed in early 1900 that states a supercontinent called Pangaea broke apart for me the seven continents the continents slowly drifted to their present positions |
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Pangea |
The continents before they broke apart |
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Plates |
The plates move between 5 and 10 cm a year the plate sometimes colliding grind past each other at the plate boundaries |
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Convergent plate boundaries |
Crash together forming mountains and producing earthquake and volcanic activity |
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Divergent plate boundaries |
MOVE APART. Most are under ocean, they build under sea mountain ranges called mid-ocean ridges. |
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Transform boundaries |
When two plates slide past each other often causing earthquakes |
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Fault line |
When pressure builds up when two plates meet I'm too much pressure builds up the Rocks suddenly slide past each other and the pressure is released this is an earthquake |
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Focus |
The place in Earth's crust where pressure was released this can be many kilometers below the crust |
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Epicenter |
Spot on Earth's surface directly above the focus |
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Folded mountains |
Formed when the Earth's crust folds into Great Waves |
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Faulted mountains |
Formed when the Earth's crust breaks into huge blocks |
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Volcanic mountains |
Formed when converging boundaries crash together heat and pressure becomes so great the rock melts molten rock is forced to the surface of the Earth forming mountains |
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Volcanoes |
Cinder cone volcanoes shield volcanoes composite cone volcanoes |
