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9th grade review of plates, volcanoes, eathquakes, minerals and rocks

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1.type of igneous rock that cools fast above ground , notallowing larger crystals to form
6.igneous rock; salt and peppery; light colored; intrusive
7.igneous rock; extrusive; cooled so quickly that there are no grains
10.dark gray , igneous rock, fine grained; makes up most of oceanic crust
12.fastest type of earthquake wave; travels through all materials
13."field mineral"; most common specific mineral in continental crust
14.tall gently sloped volcanoe; lava very fluid; non-explosive
16.clear mineral; fizzes when HCl applied; you see double
19.steep, tall, explosive type of volcano made of different layers of ash, lava, cinders, mud
21.igneous rock; greenish black; dark colored; intrusive
23.clastic sedimentary; clay
25.dark colored mica
26.deep depression in subduction zone
2.parallel sliding plate boundary
3.location of the surface directly above the earthquake source
4.when one plate is converges and dives under the other
5.sedimentary, clastic, has pebbles
8.mechanism responsible for plate movement and earth magnetic field
9.lavea explodes into the air, rains down small cooled fragements that pile up
11.most common general category of mineral in crust; made of silicon and oxygen atoms with tetrahedral units
15.formed at the spreading center
17.igneous rock; extrusive; fine grained; light-colored
18.foliated, looks like banded granite
20.only half as fast as P waves; can't go through liquids or gases
21.lead sulfide mineral; blocky cleavage; metallic luster
22.olive green mineral containing a lot of iron and magnesium
24.when shale undergoes metamorphism it converts to this

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