science
Terms
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- extrusive rock
- igneous rock that forms from lava on Earth's surface
- grain
- a particle of mineral or other rock that gives a rock its texture
- metamorphic rock
- type of rock that forms an existing rock that is changed by heat, pressure, or chemical reactions
- sedimentary rock
- type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and comented together
- igneous rock
- type of rock that forms from the cooling of molten rock ator below the surface
- texture
- the look and feel of a rock's surface, beter mined by the size, shape, and pattern of a rock's grains
- porphyritic texture
- igneous rock texture in which large crystals are scattered on a background of much smaller crystals
- sediment
- small soild pieces of material that comes from rocks and organisms
- intrusive rock
- igneous rock that forms when magma hardens beneath Earth's surface
- deposition
- process by which sediment settles out of the water or wind that is carrying it
- erosion
- the destructive process in which water or wind loosen and carry away fragments of rock