https://padlet.com/isabelle_downs/7oxypztkwu3 All about the three different plate boundaries en-us 2019-03-27 14:06:00 UTC 2024-05-30 23:55:10 UTC hello@padlet.com isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/345707836 Convection currents pull two oceanic or continental plates apart. For oceanic crusts hot, less dense magma rises in the middle, cools and hardens, pushing the old seafloor out. An example of oceanic divergent boundaries is the Mid- Atlantic ridge. For two continental crusts on the other hand convection currents pull continental plates apart. Magma rises in the middle cools, hardens, then sinks forming a valley. Eventually fills in with ocean water and becomes seafloor spreading. An example of this is the Great rift valley in Africa. ]]> 2019-03-27 14:07:42 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/345707836 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346157596 2019-03-28 14:21:17 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346157596 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346159788 There are three different types of convergent plate boundary's, Ocean-continental with subduction, ocean-ocean with subduction, and Continental continental No subduction. Each section you will see a picture and an explanation of each. ]]> 2019-03-28 14:24:51 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346159788 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346162049 These plates move towards each other and cause ocean trenches, volcanoes and mountains. Convection currents cause the denser, ocean plate to dive under continental plate. Ocean plate melts, forms magma and magma rises forming volcanoes. An example on earth of this is the Andes Mountains. ]]> 2019-03-28 14:28:49 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346162049 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346165487 These plates move towards each other forming ocean trenches, and volcanic islands. Convection currents cause two ocean plates to move towards each other. One plate is always older, colder and more denser and dives under. An example on Earth of this boundary is the Aleutian Islands. ]]> 2019-03-28 14:33:02 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346165487 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346169425 During this process the plates move towards each other and it forms mountains. Convection currents cause two continental plates to move towards each other. Both plates are the same density therefore no subduction occurs and the two plates crumple up. An example of this is the Himalayan mountains. ]]> 2019-03-28 14:39:16 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346169425 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346174152 2019-03-28 14:47:25 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346174152 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346174679 These plates will slide past each other causing earthquakes. Convection currents move two plates (oceanic or continental) in opposite directions or the same direction at different speeds. An example of a Transform boundary on Earth is the San Andreas Fault. ]]> 2019-03-28 14:48:16 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346174679 isabelle_downs https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346177987 2019-03-28 14:54:21 UTC https://padlet.com/isabelle_downs/7oxypztkwu3/wish/346177987