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The Earth's surface

The crust
1. Made up of plates
  1. Plate tectonics
  2. Plate Boundaries
    1. Destructive
      1. Fold Mountains
        The andes
      2. Earthquakes
        Alaska 1964
    2. Constructive
      1. Mid ocean ridges
        Mid-Atlantic ridge
      2. Volcanic mountains
        Mt Vesuvious
        Dormant but will erupt again
      3. Volcanic Islands
        Iceland
    3. Passive
      1. Earthquakes
        Chile 1960
      2. Fault lines
        San Andreas fault
2. The outermost layer
The mantle
The core
Earthquakes
1. Seismograph
  1. Seismologist
2. Richter Scale
3. Focus
4. Epicentre
5. Tremor
Fold mountains
1. Destructive Boundary
2. One plate subducted
  1. Other goes up and forms fold mountain
  2. Gets melted in magma
    1. Eventually Reforms into Mid-Ocean ridge
3. The Alps
4. Periods of folding
  1. Alpine(30-35 million years)
  2. Amorican(250 million years)
Volcanoes
1. Magma rises from magma chamber through vent
  1. Reaches the surface as lava
  2. Build up of material from eruptions causes cone shape
  3. Eruption causes Ash cloud
2. Extict
3. Active
4. Dormant
Mid-Ocean Ridges
1. Magma rises through cracks in crust
  1. Cools and hardens into rock

The Earth's surface

	Created by Shane Buckley over 10 years ago