PLATES TECTONICS BY: DEVANTE BOOKER

WWK You will learn about how the plate tectonics work and how the theory was brought up, and what all are formed by the moving of the plates.

HOW THE THEORY CAME TO BE Plate Tectonics is a theory developed in the late 1960’s. It explained about the outer forms (crust)of the earth that were formed. When combining the continental drift and the information on the global seismicity, the plate tectonics theory came about.

COMING TO KNOW ABOUT THE PLATES The plates are composed of lithosphere, and its about 100km thick. The largest plate is the pacific ocean plate, mostly in the ocean. The pacific plate covers just about a little sliver of California & Mexico’s Baja Peninsula.

WHAT DO THEY FORM? These plates are always moving, constantly. Over time, the plates have been speeding up just a tab more each year, its changing by centimeter’s per year. Because of the plates constantly in motion, they formed mostly volcanoes, one of the biggest one’s made was called the Kilauea Volcano in Hawaii Most earthquakes & volcano action happen along narrow zones most known is the “ The Ring of Fire” located in the Pacific.

THE 3 BOUNDARIES There are 3 types of boundaries which are Divergent boundaries- which plates move apart the material from the mantle which creates new sea floor. Convergent boundaries- plates move together, causing 1 of the slabs of lithosphere to be consumed by the mantle, overriding the plate. Transform boundaries-where plates grind past each other without creating or destroying the lithosphere. With all these different boundaries of the tectonic plates, the most common is the convergent boundary, making up the volcanoes on earth.