P3+-+Earth's+Crust

The crust is about tweenty five miles thick and relatively light and brittle. must earthquakes occur on the crust. we live on it. The first lyers of the earht consist of about __10miles__ of rock and loose materials. the range of the earthes crust is from 500c to __1000c.__ The crust is broken into many pieces called plates these plates float on the soft mantle which is located beneth the crust. Most of the time the plates move along smoothely but sometimes they are stuck and build up pressure. After pressure build up enough they will jolt past each other, into each to each other or apart from each other. These result in earthquakes.