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Extrusive
Intrusive
Cools Fast!
Cools Slowly...
Fine Grained- No time for big crystals to
form
Large Grained-
Time for big crystals to
form
Rock:______Observations: __________
I think this is extrusive/intrusive (pick one)Draw
x 7Rocks:
Andesite
Pumice DioriteRhyolite
GraniteBasalt
Obsidian