geography- restless earth- fold mountain and tectonic plates

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  • Geography
    • tectonic plates
      • earth structure
        • core
          • mantle
            • crust
              • earth structure
                • core
                  • mantle
                    • crust
                      • tectonic plates
                        • plate boundary types
                          • destructive
                            • moving towards
                              • ocanic sink
                                • ocanic plate destroyed in mantle
                                  • friction at subduction zone=earthquake
                                    • volcanoes form
                                      • ocean trenches form
                            • continental and oceanic
                              • moving towards
                                • ocanic sink
                                  • ocanic plate destroyed in mantle
                                    • friction at subduction zone=earthquake
                                      • volcanoes form
                                        • ocean trenches form
                            • collision
                              • 2 continental plates
                              • example- Himalayas
                            • nazca and S.America
                          • constructive
                            • moving away
                              • Mid atlantic ridge
                            • magma rise-fill gap
                              • cool-create new ccrust
                                • moving away
                                  • Mid atlantic ridge
                          • conservative
                            • sideways move
                              • same direstion, different speed
                            • san andreas fault
                            • no crust created or destroyed
                      • very thin 20km
                      • 2 types
                        • oceanic
                          • thinner
                          • denser
                          • sink
                          • younger
                        • continentle
                          • thicker
                          • less dense
                          • don't sink
                          • older
                      • plated move due to convection current in mantle
                    • semi-molten rock,move slowly
                  • solid iron and nickle
              • very thin 20km
              • 2 types
                • oceanic
                  • thinner
                  • denser
                  • sink
                  • younger
                • continentle
                  • thicker
                  • less dense
                  • don't sink
                  • older
              • plated move due to convection current in mantle
            • semi-molten rock,move slowly
          • solid iron and nickle
      • plate boundary types
        • destructive
          • continental and oceanic
            • collision
              • 2 continental plates
              • example- Himalayas
            • nazca and S.America
          • constructive
            • magma rise-fill gap
              • cool-create new ccrust
            • conservative
              • sideways move
                • same direstion, different speed
              • san andreas fault
              • no crust created or destroyed
        • Fold mountains
          • process
            • river deposit sediments in geosyncline depressions
              • sediments compressed
                • sedimentary rocks form
                  • examples- sandstone, limestone
                  • plates compress
                    • sedimentary rocks fold upwards
          • plate boundary
            • destructive
            • collision
          • characteristics
            • high mountain
            • rocky , steep slopes
            • high- snow and glacier
            • valleys- lakes
          • land uses
            • farming
              • high slopes- graze animals
              • lower grow rops
            • HEP power
              • steep sided, high lakes
            • mining
              • metal ores
              • zig zag roads to access
            • tourism
              • scenery
              • winter sports

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