click below
click below
Normal Size Small Size show me how
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 NiƱo | 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) |