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Science Rocks

Rocks

TermDefinition
Extrusive Outside fast small crystals. It forms above the earth's surface.
Intrusive Inside slow big crystals. When a rock forms below the earths surface.
Sedimentary Rock Layers of particles are pressed together over time.
Classic/Clastic Older rocks break down and become compacted together. Pieces of old minerals.
Organic Made of once living materials.
Chemical Minerals come out of a solution and crystallize. Formed when water dissolves a mineral.
Permanent Ripple Marks Formed by moving water or wind.
Cracking Evidence of wet periods followed by dried periods
Cross Bedding When wind drops sand on curved slopes of sand dunes.
Compaction Compaction is the process by which sediments form sedimentary rock by squeezing the water out.
Lithification The process by which sediments harden.
Cementation Process of minerals dissolving and then holding the particles together in a sedimentary rock.
Metamorphic Rock New rocks that form from existing rocks from heat pressure or chemicals.
Contact Metamorphism broken down pieces of rock near the Earth's surface is altered by magma.
Regional Metamorphism Rocks buried deep within the Earth are altered by magma chambers.
Banded Foliated Rocks Foliated rocks have bands and lines.
Created by: gdstanich
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