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Blank, Lisa M.; Plautz, Michael R.; Crews, Jeffrey W. – Science Scope, 2004
In 1990, a group of geologists discovered a large number of shatter cones in southwestern Montana. Shatter cones are a type of metamorphosed rock often found in impact structures (the remains of a crater after a meteor impact and years of Earth activity). Scientists have discovered only 168 impact craters around the world. If rocks could talk,…
Descriptors: Geology, Science Activities, Science Instruction, Computer Software