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archer
rock cycle
24
Science
7th Grade
01/28/2014
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Term
igneous Rock
 Definition
cooled magma or lava. the longer it takes to cool the bigger the crystals
Term
intrusive
 Definition
formed from magma has crystals
Term
extrusive
 Definition
formed from cooled lava no crystals
Term
intrusive example
 Definition
granite
Term
extrusive examples
 Definition
obsidian, basalt, scoria, and pumice
Term
Granite
 Definition
has crystals used in kitchens as counter top.
Term
obsidian
 Definition
volcanic rock
Term
basalt
 Definition
dark rock
Term
scoria
 Definition
has air holes solid filled foam
Term
Detrial
 Definition
sed. rocks- made up of sediment
Term
conglomerate
 Definition
large pebbles
Term
sandstone
 Definition
sand(quartz, feldspar)
Term
shale
 Definition
mud or clay sediment
Term
chemical
 Definition
sed. rocks- formed from dissolved rocks
Term
limestone
 Definition
CaCo3
Term
Halite
 Definition
salt
Term
metamorphic rocks
 Definition
formed by 1)pressure- overlaying layers
2) heat- magma
Term
A) foliated
 Definition
met. rock- has layers or bands
Term
B)nonaffiliated
 Definition
met. rocks- no layers or bands
Term
foliated 1)
 Definition
slate-made form shale
Term
foliated 2)
 Definition
schist- " " mica
Term
foliated 3)
 Definition
gneiss- " " granite
Term
nonfoliated 1)
 Definition
marble- from limestone
Term
nonfoliated 2)
 Definition
quartzite- " sandstone
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