There are three different types of plate boundaries, they are: convergent, divergent, and conservative. These plates are found at the edge of the lithospheric plates. (1) Wide zones of deformation are usually characteristic of plate boundaries because of the interaction between two plates. (1) The three boundaries are characterized by their distinct motions. (1) In a divergent boundary, or spreading center, the two plates move away from one another. As the two plates move apart, mid-oceanic ridges are created as magma from the mantle upwells through a crack in the oceanic crust and cools. (1) In a convergent plate movement the plates move together ending up on top of eachother. There are things called subduction zones, they are the location of very stong earthquakes. Plate tectonics explain the observed evidence for large scale motions of the earth's lithosphere. (2) This theory is just like the continental drift, but they later changed the name to plate tectonics. Plate tectonics are what move the earth, so they cause foor spreading. Volcanos are not usually found around plate tectonics. (3) There is magma around them and most people would consider that a volcano but its not. Plate tectonics do in fact cause earthquakes. When the plates move it causes the earth to crack and then it forms to an earthquake.
Bibliography
1 http://scign.jpl.nasa.gov/learn/plate4.htm
2 http://en.wikipedia.org/wiki/Plate_tectonics
3 http://volcano.und.edu/vwdocs/frequent_questions/grp9/question1066.html
No comments:
Post a Comment