GENERAL GEOLOGY

Detailed explanation-1: -Plate tectonics is the theory that Earth’s land masses are in constant motion. The realization that Earth’s land masses move was first proposed by Alfred Wegener, which he called continental drift .

Detailed explanation-2: -Continental drift describes one of the earliest ways geologists thought continents moved over time. Today, the theory of continental drift has been replaced by the science of plate tectonics. The theory of continental drift is most associated with the scientist Alfred Wegener.

Detailed explanation-3: -The Earth’s surface is active according to tectonic theory, moving as much as 1-2 inches a year. The many tectonic plates shift and interact all the time. This motion reshapes the Earth’s outer layer. Earthquakes, volcanoes and mountains are the result of this process.

Detailed explanation-4: -Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.

Detailed explanation-5: -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.