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Weathering & Erosion

11/23/2009

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Causes of weathering
            Wind
            Water
            Ice
            Roots-
                        The actual pushing or breaking of a rock
                                                MECHANICAL WEATHERING
              CHEMICAL WEATHERING
                        Acid eats away at rock and actually dissolves it.
   
                                    Plants sometimes give off acids
                                    Acid Rain
                                    Combinations of minerals have acidic effects
                                    Humans spilling chemicals (like soda)
                                    Dead animals sometimes give off acids
  Erosion
            The moving of weathered sediment from place to place
                                      Agents of Erosion
                                                Water
                                                Wind
                                                Humans
                                                Animals
                                                GRAVITY-  The most common agent-
                             
Things fall down….. landslides, mudslides or just plain movement downhill are all caused by gravity, a pull downward.  

      As wind and water and even acid weather rocks on mountains, it loosens the fragments,  gravity pulls them downward so they fall down the mountain.  This is why mountains are wider on the bottom and narrow on top.
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  • Home
  • Earth Sci Labs
  • 7th Grade ON-LINE TEXTBOOK
  • 7th Grade
    • 7th grade Lab Reports
    • Current events
    • 7th 1- Scientific Theory
    • 7th Lanforms & Maps >
      • Mountain Project
      • Mineral/ Gem Project
    • 7th 3- Geology >
      • Weathering & Erosion
      • Fossil Project
      • Plate Tectonics
      • Earthquakes
      • Unit Test Review
    • 7th Unit 4 Atoms >
      • 7th Atom Brochure
  • Earth Science by topic
  • Submit Homework
  • 8th Grade Units 1-4
    • Unit 1 Models of the Earth >
      • Metric Review
      • Chapter1 Review
      • Chapter 2
      • Topographic Maps
    • Unit 2 Rocks & Minerals >
      • Minerals
      • Rocks
    • Unit 3 Dynamic Crust >
      • Earthquakes
      • Earthquakes & Interior
      • Hot Spots
      • Volcano
      • Dynamic Crust Review >
        • Practice Tests
    • Unit 4 Shaping the Earth's Surface >
      • Weathering
      • chemical weathering
      • Another Weathering video
      • Erosion Videos
      • Glaciers >
        • Glacier Pwr points
      • Changing Earth
      • Unit Review
  • 8th Grade Units 5-9
    • Unit 5 Earth History >
      • Archean History
      • Geological Eras
      • Geologic Sequence Project
      • Unit 5 Review
    • Unit 6 & 7 Climate & Meteorology >
      • 801 Vacation Work
      • Weather Tracking HW Lab
      • Meteorology info
      • Station Models
      • Wind
      • Storms
      • Weather & Climate Review Tests
    • Unit 8 Earth & Space
  • 801 Test Review
  • Ways to pass the regents
  • files
  • Other Important Links
  • New Page