3RD PLANET STUDY GUIDE

3RD PLANET STUDY GUIDE - 3RDPLANETSTUDYGUIDE#3...

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3 RD  PLANET STUDY GUIDE #3 NATURAL RESOURCES   Metals What was the first metal used by humans? Copper    Is there a relationship between subdivisions of human history and natural resource  uses?     What is bronze and why is it considered better than copper? Bronze melts at a lower temperature and its easier to work with and when it cools down it is a  stronger metal as a solid.   Is iron abundant? If so, why did it take so long for humans to use iron? Yes, But it was unattainable until the invention of the bellow.    What is the difference between a rock and a mineral? Rock is an aggregate of a mineral. A mineral is a naturally occurring chemical  composition.    What is the difference between igneous, sedimentary and metamorphic rocks? Igneous: Formed by solidification of molten rock called magma Sedimentary: Formed from bits of eroded older rock
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This note was uploaded on 01/27/2012 for the course GEOL 1420 taught by Professor Wagner during the Fall '10 term at Texas State.

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3RD PLANET STUDY GUIDE - 3RDPLANETSTUDYGUIDE#3...

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