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Mindmap Science, Soil problems, Natural disasters, Erosion, Biological…

- - - - 1.Soil parent material 2.Climate 3.Landscape 4.Time of soil formation 5.Soil oraganism
    - - 1.Climate 2.Living oraganism 3.Topography 4.Parent material 5.Time
    - - E Horizon
        
        light colored zone of leaching
      - B Horizon
        
        known as subsoil and clay zone
      - A Horizon
        
        Known as topsoil. It is a source of plant nutrients
      - C Horizon
        
        Soil parent material layer
      - R Horizon
        
        Bedrock. Unweathered parent material
      - O Horizon
        
        Loose and high percentage of
        organic matter.
    - - Silt
        
        Particles are smaller than sand..
      - Clay
        
        Very small indeed.
      - Sand
        
        weathered primary rock minerals.
- - - - Middle layer. 2900km thick temp is between 870-200°C sticky liquid state
    - - Mostly made of iron. has the most pressure 3500km thick
      - outer core is liquid ~2,250km thick , 2,200-5,000°C
  - - - Weathering
        
        Process of breaking down
      - Deposition
        
        Process of adding sediment
        
        Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass. Wind , ice, water, and gravity
      - Canyon
        
        Canyon is a deep cleft between escarpments or cliffs resulting from weathering and the erosion
      - Sand dunes
        
        A dune is a mound of sand formed by the wind usually along beach or in a desert.
      - Abyssal fans
        
        Abyssal fans, also known as deep-sea fans, are underwater geological structures made by sediments through the deposition process
      - River
        
        Meanders - It is a snaking pattern of water stream formed by alternatively eroding sediments
      - Delta
        
        A delta is a landform created by deposition of sediment that is carried by a river
      - Ox-bow lake
        
        An oxbow lake is a U-shaped body of water that forms when a wide meander from the main stem of a river is cut off
- - - - To pour off a liquid, leaving another liquid or solid behind.
    - - Separate magnetic from non-magnetic
    - - Precipitation is the creation of a solid from a solution.
    - - recycling waste Plastic and Paper (often by hand)
    - - Filtration takes advantage of the physical property of the state of matter.
    - - Sifting or sieving used to separate a dry mixture and different sizes by passing