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Science Ch. 16 (December 13)
30 cards·by mrsmcmahon
erosion
the process by which particles of rock are removed from their source
igneous rock
formed when hot, liquid magma cools and hardens
sedimentary rock
forms when rocks are broken down into smaller pieces that harden into new rock
metamorphic rock
forms when rock is heated or squeezed deep within the earth
weathering
when water, ice, wind and heat break down rocks
deposition
the process in which water, ice wind, and gravity drop newly formed sediments
foliated
banded texture of rocks; mineral grains line up
nonfoliated
mineral grains do not line up
uplift
the process by which regions of the Earth's crust rise to higher elevations
texture
depends on the sizes, shapes and position of minerals in a rock
density
mass divided by volume
coarse texture
BIG grains, cools slowly deep within the Earth, dark color
fine texture
tiny grain, cools quickly, light color
magma
hot liquid that forms when rock partially or completely melts, within the earth's crust, this
forms igneous rock
lava
molten, fluid rock that flows from a volcano
Rock Cycle
1. sedimentary rock 2. metamorphic rock 3. magma 4. igneous rock 5. sediment
3 types of rocks
igneous, sementary, and metamorphic
rock classification
based on how rocks form and their texture and composition
texture of igneous rock
based on how quickly it cools
the slower igneous rock cools
the larger the crystals are
sedimentary rock
grains of rock that are cemented together
texture of sedimentary rock
depends on the size and shape of the grains it contains
breaking down rock by wind, water and ice
weathering
rock cycle
continuous process by which new rock forms from old rock material
each type of rock
can be turned into all 3 types, depending on the processes that act on the rock
process that change one rock into another
weathering, erosion, heating, melting, squeezing
as sediment is transported
the size and shape of the grains change
sediment or rock is affected by
heat and pressure
heat and pressure cause sediment and rock
to harden, metamorphose, or melt
rockscan be returned to the earth's surface by
erosion of overlying rock and by uplift