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Cards (19)

  • Most rocks are made up of minerals for example gabbos is made up of several minerals
  • Some rocks like obsidian contains no minerals
  • Minerals are made up of the same elements
  • Minerals have the same proportion
  • Minerals atoms are in crystal structure
  • Rocks dont have patterns because they contain minerals at different proportions
  • Our world is made up of rocks
  • most of the earth is made from solid and molten rocks
  • Rocks are used for sky scrapers and houses
  • Rocks are used for sources of metals like iron, aluminum, and copper
  • Rocks are used for the carving of otateus and other arts
  • Rocks are used for roads
  • Rocks are used for monuments, great wall of china, great pyramids, etc
  • igneous rocks form when molten rock cools and becomes solid
  • Ignous rocks have lava at the surface
  • Igneous rocks have magma below the surface
  • Metamorphic rocks are caused by older rocks changing into new rocks through heat and pressure.
  • sedimentary rocks form when pieces of older rocks and plants and other loose materials press together
  • Sedimentary rocks are 75 percent of the earth's surface and only 5 percent crust