GEOLOGY

Detailed explanation-1: -Tectonic Plates The system of ideas behind plate tectonics theory suggests that Earth’s outer shell (lithosphere) is divided into several plates that glide over the Earth’s rocky inner layer above the soft core (mantle).

Detailed explanation-2: -The theory of plate tectonics revolutionized the earth sciences by explaining how the movement of geologic plates causes mountain building, volcanoes, and earthquakes.

Detailed explanation-3: -Plate tectonics (from the Late Latin: tectonicus, from the Ancient Greek: , lit. ‘pertaining to building’) is the generally accepted scientific theory that considers the Earth’s lithosphere to comprise a number of large tectonic plates which have been slowly moving since about 3.4 billion years ago.

Detailed explanation-4: -The theory of plate tectonics is what brings together continental drift and seafloor spreading. Plates are made of lithosphere topped with oceanic and/or continental crust. The plates are moved around on Earth’s surface by seafloor spreading. Convection in the mantle drives seafloor spreading.