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Earth Science
Plate Tectonics
| Question | Answer |
|---|---|
| Convergent | where 2 plates are pushing into each other |
| Divergent | where 2 plates are pulling apart from each other |
| Transform | where 2 plates are sliding past each other |
| When Earth's plates are pulling apart slowly? | MID-ATLANTIC RIDGE, EAST AFRICAN RIFT |
| Where can you go, to see the following? Oceanic crust subducting under Oceanic crust? | TONGA, PHILIPPINES, ALEUTIAN ISLANDS |
| Oceanic crust subducting under Continental crust? | NAZCA PLATE going under SOUTH AMERICAN PLATE, |
| Continental crust colliding with Continental crust? | INDIA colliding with ASIA. |
| Where can you, go here in the U.S., to see transform boundary? | SAN ANDREAS FAULT, in southern California. |
| Alfred Wegener | The person who thought the continents are drifting on the Earth’s surface making Pangea |
| Lithosphere | Crust + upper rigid part of mantle What the plates are made up of. (Lithosphere Plates) |
| ASTHENOSPHERE | Softer, “plastic-like” zone of the upper mantle. Capable of flow. What the lithospheric plates move around on. |
| Covergent subduction | The oceanic plate slides under the less dense continental plate |
| Convergent collision boundary | when both plates go up making folded mountains |
| Hot Spots | a place where hot mantle material rises to the surface called a “mantle plume”, it can burn through the crust to form volcanoes. |
| Radioactive Decay | radioactive elements release energy in the form of heat |
| Residual Heat | Heat of gravitational energy leftover from Earth’s formation. |