Notes and Study material for Exams
The Earth’s Shifting Skin: A Journey Through Plate Tectonic Theory The Earth, our planet, is a dynamic and ever-changing entity. Beneath our feet, a hidden world of immense power and movement constantly reshapes the surface we inhabit. This dynamic force, known as plate tectonics, is the driving engine behind earthquakes, volcanoes, mountain ranges, and even … Read more
Interior of the earth- composition and physical conditions Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s … Read more
Most of the knowledge we have about Earth’s deep interior comes from the fact that seismic waves penetrate the Earth and are recorded on the other side. Earthquake ray paths and arrival times are more complex than illustrated in the animations, because velocity in the Earth does not simply increase with depth. Velocities generally … Read more