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10 Cards in this Set

  • Front
  • Back
~a breakdown process
weathering
~breakdown of rock into smaller pieces by physical means
mechanical weathering
~water is different than most subtances on earth b/c it expands when it freezes
ice
~rock and sediment grinding against eachother and wearing away exposed surfaces
abrasion
~plants roots fins their way into cracks-->cracks get bigger

~slow but powerful
plants
~water seeps into cracks in rocks, freezes and expands

~crak gets bigger over time
ice wedging
erathworms moving through soil expose new surfaces to weathering
animals
chemical breakdown of rocks and minerals into new subtances
chemical weathering
carbonic acid, sulfuric acid (volcanoes), nitric acid, (volcanoes) are foun in percipitation
acid percipitation
may contain weak acids, carbonic acid, and sulfuric acid
acid ground water