Plate Techtonics

By: Zachery Finley

Convergent Boundaries

Convergent boundaries are when two of the same density plates (Continental and continental or oceanic and oceanic) collide and they create land forms such as folded mountains. This is also commonly known as destructive plate boundary.

Convergent With Subduction Boundary

Convergent with subduction is pretty similar to convergent but the difference is that this boundary has two different plates colliding (Oceanic and Continental). When this occurs the oceanic plate subducts under the continental because the continental plate is more denser/thicker. This will create a underwater trench or even volcanic ranges.
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Divergent Boundary

Divergent is when two plates divide from each other (Oceanic and Oceanic or Continental and Continental). This can cause the outcome of creating rift valleys. There is also a rift valley named the great rift valley located in Africa. This is also sometimes known as the constructive boundary.

Transform Boundary

Transform is when two plates slide past each other. This can be two of the same plates or two different plates. Although this does not create any landforms, it does cause earthquakes. This boundary is also nicknames as the conservative plate. The most well known place for this is the San Andrea's fault line
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The Questions


  1. Core, Mantle, crust. The crust is what allows us to live on earth. The mantle is the middle layer and where the volcanic activity takes place and creates the crust. Lastly the core is the hottest part and is equivalent to the surface temperature of the sun. This is located at the center of the earth

  2. The continental crust is the layer of igneous, sedimentary, and metamorphic rocks which forms the continents and the areas of shallow seabed close to their shores, known as continental shelves.

  3. Abraham Ortelius in 1596 and was fully developed by Alfred Wegener in 1912

  4. Wegener noticed that the continents seemed to fit together. They found the same fossils from the same animal on different continents

  5. Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.

  6. Harry Hess's

  7. Seafloor spreading is caused by two plates moving apart and this is caused by plate tectonics. Continental drift is also caused by plate tectonics. This means we can say that continental drift is related to seafloor spreading. When the plates move, it carries the continents with it, and the continents move away from each other.

  8. This helps because this is where hotter material rises and cooler material sinks, so the magma rises and creates new land while the cooler material sinks.

  9. Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of "plates" that move around across the earth's surface.

  10. Transform boundary is when two plates slide past each other, this can create an earthquake. Divergent is when two plates divide from each other, this can create rift valleys. Convergent boundaries are when two plates collide with each other creating folded mountains. Convergent with subduction is just like convergent but this is with one continental crust and a oceanic crust colliding therefore creating a trench or volcanic ranges.

  11. The Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.

  12. Divergent- Rift valleys

    Convergent- Folded Mountains

    Convergent w/ subduction- Trench or volcanic ranges

    Transform- Earthquake

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