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Rock Cycle, Earth's layers, Volcanoes, Fossil fuels, Erosion, Soil,…

- - - - rocks that form at erupting volcanoes and oozing fissures
    - - forms when magma remains inside the Earth's crust where it cools
    - - rocks that are rich in feldspar and silicon
    - - rock is a silicate mineral or rock rich in magnesium and iron
- - - - 8-75 kilometers thick and consists of many rock types
    - - 7 kilometers thick and composed of igneous rocks
- - - - generates the Earth's magnetic field
- - - - Small particles such as clay and silt are
        lifted and removed
    - - Rock surfaces are blown off by extreme
        wind
- - - - only type of erosion capable of moving
        boulders
- - - - organic layer
    - - topsoil
    - - subsoil
    - - parent rock
- - - - the source of the mineral matter in soils
        
        affects the rate of weathering
        
        chemical makeup affects the soil fertility
- - - - water freezing and expanding in a rock
    - - rocks weathering down other rocks
    - - burrowing or plant roots
    - - digging or blasting into a rock
- - - - clay formation, when certain minerals are exposed to water and slowly turn into clay
    - - dissolving, rainwater mixing with carbon dioxide making carbonic acid which eats at rocks
    - - rusting, when iron in rocks is exposed to air and water