Sunday, December 11, 2011

Rocks and Minerals

  • natural resources-things people use from earth (air, wind, water, rock, minerals, animals, plants)
 
  • rock-nonliving hard part of earth.  different sizes, shapes, colors, etc...
  • rocks have been used as tools (arrow) and to build walls and buildings
 
  • minerals-hard, nonliving parts of soil that can make rocks sparkle or shine (graphite in pencils, flourite in toothpaste, magnetite in magnets)
 
  • rocks and minerals take millions of years to form in the ground
  • people dig in the ground for rocks and minerals
  • rocks can be made of one or more minerals

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