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Rocks

definitions

QuestionAnswer
intrusive rocks that form from magma below the surface
sedimentary rock forms when sediments are pressed and cemented together, or when minerals form from solution
igneous rock when hot magma cools and hardens
sediment are loose materials such as rock fragments mineral grains, and bits of shell that have been moved by wind, water, ice, or gravity
granitic describes generally light-colored, silica-rich igneous rock that is less dense than basaltic rock
rock cycle to show how rocks slowly change through time, scientists have created a model called___
foliated when mineral grains line up in parallel layers, the metamorphic rock is said to have a ___ texture
rock is a mixture of such minerals, rock fragments, volcanic glass, organic matter, or other natural materials
extrusive formed as lava cools on the surface of Earth
nonfoliated in some matamorphic rocks, layering does not occur. The mneral grains grow and rearrange but they don't form layers. This process produces a ___ texture
compaction erosion moves sediment to a new location, where they then are deposited. Here, layer upon layer of sediments build up. Pressure from the upper layers pushes down on the lower layers. If the sediments are small, they can stick together & form solid rock
metamorphic rock rocks that have chenged b/c of changes in temperature & pressure or the presense of hot, watery fluids
cementation occurs when minerals such as quartz, calcite, & hemitite are deposided between the pieces of sediment
lava when magma reaches Earth's suface & flows from volcanoes
basaltic igneous rocks are light-colored rocks of a lower density than ___ rocks
Created by: nnkhatri.clm
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