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7Sci CH11
7th Science CH11 The Rock Cycle
Term | Definition |
---|---|
extrusive | igneous rock formed by lava on Earth’s surface; extrusive igneous rock cools in air and moisture, forming minerals quickly that are much smaller than those in intrusive rock |
foliated | texture of metamorphic rocks whose mineral grains have been flattened and lined up in parallel bands |
igneous rock | forms when lava or magma cools and crystals grow together, creating solid igneous rock |
intrusive | igneous rock formed slowly from magma deep beneath Earth’s crust; generally contains large, visible minerals |
metamorphic rock | forms when heat or pressure or both are applied to any kind of rock |
nonfoliated | texture of metamorphic rocks whose mineral grains have been changed, rearranged, or combined (but did not form parallel bands) |
rock | a mixture of one or more minerals or a mixture of mineraloids, glass, or organic particles |
rock cycle | process by which the materials of Earth change to form different kinds of rocks; all rocks are in a constant state of change |
sedimentary rock | formed when any type of rock and plant and animal remains are weathered into sediments and then recombined to form rock by compaction, cementation, or precipitating out of solution |