chain of volcanic and seismically active sites where the Pacific plate and other tectonic plates meet. The vast majority are located in the Aleutian Islands, the Alaska Peninsula, the Hawaiian ...

The Earth's hard outer layer (where we live) is called the crust. It is made up of large slabs called tectonic plates. The plates fit together like jigsaw puzzle pieces far beneath our feet.

find out how much you know about the vast ocean floor and its rifts and valleys through this quiz! Q1 ... spreading is a geologic one where the tectonic plates which large slabs of Earth's ...