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Science 5
Chapter 9 vocab
| Term | Definition |
|---|---|
| magma | the melted rock forming substances inside the earth's mantle |
| lava | THE MAGMA THAT REACHES THE SURFACE OF THE EARTH |
| intrusive | a type of igneous rock that cools slowly and has large crystals |
| extrusive | a type of igneous rock that cools quickly and has small crystals |
| abyssal plain | nearly flat region on the ocean floor |
| subduction | the process by which a lithospheric plate is forced under another |
| deep ocean current | a stream of water that flows deep beneath the ocean's surface |
| coriolis effect | the way earth's rotation affects wind currents |
| El Niño | a periodic change in ocean and atmospheric conditions causing an unusually warm surface water |
| upwelling | the movement of cold water to the surface |
| polarity | the quality of having two opposite poles (positive and negative) |