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SC final review 3
| Term | Definition |
|---|---|
| weathering | breaks rocks |
| erosion | the movement |
| rock cycle | the 2 main sources of energy driving this cycle are the sun and Earths interior. |
| sedimentary | form when sediments (rock fragments) and organic materials (plants/shells) get buried, compressed and cemented together. fossils can be found in sedimentary rocks. |
| igneous | form when molten material (magma or lava) cools and hardens. |
| metamorphic | form when a pre-existing rock is exposed to heat and pressure. |
| continental drift | the present positions of the continents are different from those in the past. Evidence that the continents were once joined together is that the continents fit together like pieces of a jig-saw puzzle and similar fossils among different continents. |
| greenhouse gasses | trap heat increasing global temp. a example is carbon dioxide |