Plate Tectonics

See how mapping the location of volcanic eruptions and earthquakes can tell us where tectonic plate boundaries are. Dr. Elizabeth Cottrell explains how the plates interact and how volcanic eruptions actually cause earthquakes.

Video from Smithsonian Institution.


I was surprised to see so many earthquakes happening in the midwest. I wonder what causes these earth quake without a plate boundary near by.
Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere.
unlucky are those living on pacific plate and probably on indian one..based on all research papers on geo i did there are the most common places of earthquakes and volcano eruptions simply because boundaries between other plates are in water