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Activity (Hands-On)Grades 6 - 8

Rocks, Rocks, Rocks: Test, Identify Properties & Classify

Materials List

Each group needs:

Each rock testing kit needs:

  • 8 rock samples of the rocks listed on the Alabraska Geology Map (PDF): basalt, sandstone, limestone, granite, gneiss, slate, pumice, obsidian (not sand/gravel)
  • steel nail
  • copper penny
  • streak plate, stuch as an unglazed porcelain tile
  • magnet
  • hydrochloric acid; alternatively, use vinegar
  • magnifying glass
  • small piece of glass
  • small steel plate
  • piece of quartz
  • cup of water