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I'm Alfred Wegener and the Earth looks like this because of Pangea and continental drift. Continental drift is the theory that continents were once one landmass called Pangea and they are still gradually moving.
This is a transform boundary. The movement it does is called shearing or strike- slip. Tension is the stretching of plates. Faulting is what happens after the rock breaks.
This is a convergent boundary. When Oceanic plates slide under the continental plate it is called a subduction zone. Oceanic crust is similar to basalt and continental crust is similar to granite. Denisty is the mass divided by volume.
This is a divergent boundary. A convection is current is what drives plate tectonics. An example of a divergent boundary is the Mid- Atlantic Ridge. Seafloor spreading is when magma comes through the surface .
This is a picture of an earthquake. An earthquake has an epicenter which is where it starts and a triangulation is a way to find the location of something by using the location of other things. A seismograph is a machine that records earthquakes. P waves are for primary or pressure and S waves are for secondary, slower, and solid waves. The Richter scale is used to measure the magnitude of the earquake .
This is a volcano. The ring of fire is the pacific plate because it is the most active plate. Volcanoes can be explosive or nonexplosive. Eruptions from cinder are normally smaller. A shield volcano has gently sloping sides. A composite volcano is also called a stratovolcano and has layers.
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