BLOG TOPIC #7



PLATE TECTONICS:I chose plate tectonics because I thought it's interesting to see how the world has changed over the decades. Plate tectonics is the study of how the Earth's plates are driven and shaped by geological forces that keep them in constant motion. It would appear as though the outermost crust for the Earth is one solid shell. In reality it is cracked into several large pieces or slabs called plates that average 50 miles thick.(www/wisegeek.com)

The picture above shows a good description of how plate tectonics work.
These plates float on a partially molten mantle beneath. The molten layer is believed to be in a constant state of convection driven by heat from the Earth's inner core.(www.wisegeek.com)

Here is a picture of how the plates have moved so far.
The experts say that the plates are not done moving yet, so it gets me to think what the map of the Earth is going to look like in twenty or thirty years.