Earth Systems

1
Earth Systems Resources

• Lucas Lemons
• 5th period
• APES

2
Rock Cycle

• Three main types of rocks Metamorphic, igneous,
  and sedimentary
• Metamorphic are made from large amounts of heat
  and pressure (slate and marble)
• Igneous rock is formed from the cooling of magma
  (granite and basalt)
• Sedimentary rock is made from the piling of
  materials over time (sandstone, shale, limestone)

3
Soil Erosion

• Soil erosion is when weathered rock or soil moves
  from one place to another
• This type of erosion destroys the soil profile
  and the water-holding capacity
• Many farming techniques such as, monocultures and
  overgrazing leads to soil erosion
• Common types of soil erosion include Sheet
  erosion, Rill erosion and Gully erosion
• Desertification, Salinization and Waterlogging
  are all caused by soil erosion

4
Soil Erosion Images
Gully erosion
Rill erosion
Sheet erosion
5
Geological Time Scale

• There are two types of time scales to measure the
  age of earth
• The first type is a relative time scale that is
  based of layers of rock and the evolution of
  organisms
• The second type is the radiometric which is based
  on the radioactivity of chemicals in rocks

6
Geological Time Scale Image
7
External Links

• http//www.eo.ucar.edu/kids/green/cycles1.htm
• http//www.cotf.edu/ete/modules/msese/earthsys.htm
  l

8
Video Link

• https//www.youtube.com/watch?vG5Rp9MJJGCU
• https//www.youtube.com/watch?vSY3MZ_wNFW8