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joshSsciencefinals1

study for 7th grade science finals 1

QuestionAnswer
which process changes rock on earth's surface? erosion
when sedimentary rock is exposed to heat and pressure, what does it change into? metamorphic rock
scientists classify rocks by... composition and texture
what is a way that magma is formed? changes in composition
what is the texture that slow cooling magma have? coarse-grained
what process forms sediment? weathering
what are strata? layers in sedimentary rock
what sedimentary rock is made from dissolved materials? chemical
what sedimentary rock is made of fossils? organic
how did humans use rocks in the past? tools
which of the followind does NOT cause magma to form; A=increase in pressure,B=rise in temperature,C=change in composition,D=decrease in pressure. A
sedimentary rock forms through the process of... cementation
what has to increase for metamorphism to occur? temperature and pressure
what are the 2 major groups of minerals? silicates and nonsilicates
groupings of silicate and nonsilicate minerals are based on... chemical composition
silicate minerals must contain... silicon and oxygen
nonsilicate minerals include... native elements
a good way to reduce the environmental effects of mining are... recycle mineral products
the color that a rock leaves on a piece of white unglazed porcelain is called the mineral's... streak
if an object is a liquid, could it be a mineral? no
is mica a class of nonsilicate minerals? no
what is a mineral deposit that's large and pure enough to be mined called? ore
what kind of mines are open pit and quarry mines? surface mines
halides and oxides are a class of... nonsilicate minerals
on what type of surface do fractures happen? curved
besides weathering and eroision, what other forces shape the earth's features? deposition and uplift
what texture does fast-cooling magma have? fine grained
during the rock cycle, what forms when magma cools? igneous rock
besides clastic and chemcial, what are the other kinds of sedimentary rock? organic
besides texture, how else are rocks classified? composition
which of the following are are coarse-grained igneous rock: shale, marble, granite, or gneiss? granite
when shale is exposed to slight heat and pressure, what does it change into? slate
what do bends and folds show in a rock? they have been deformed
when rock is heated, what forms? magma
what is it called when when sediment drops and comes to rest? deposition
beside heat what other process causes a rock to undergo metamorphism? pressure
mud cracks form when sediments are exposed to air and... dry out
what is the largest intrusive igneous rock formation? batholith
what does lava flow out of on earth's surface? fissures
what determines the composition of a rock? minerals it is made of
solid mix of 1 or more minerals and organic matter. rock
process by which new rock forms from old rock. rock cycle
process by which sediment is removed from its source. erosion
chemical makeup of a rock. composition
size, shape, and position of grains that make up a rock. texture
process in which crystals in a mineral change size/composition. recrystallization
metamorphic rock with not arranged planes or bands. nonfoliated
change in shape of rock by force. deformation
rock that cools at the earth's surface. extrusive igneous rock
more than 90% of earth's crust is made up of... silicate minerals
a material's density is the ratio of... mass to volume of a substance
Created by: darkf0xrebel
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