Scientific theory proposing that Earth’s continents move slowly across the planet’s surface over geological time Continental drift is the scientific theory that Earth’s continents were once joined together as a single landmass and have gradually moved apart over millions of years. The concept was first systematically proposed in 1912 by the German scientist Alfred Wegener, […]
Plate tectonics is the scientific theory that explains the large-scale motion of Earth’s lithosphere, the rigid outer shell of the planet. This theory, developed in the mid-20th century, revolutionized geology by providing a unifying framework for understanding earthquakes, volcanoes, mountain building, and the distribution of continents and oceans. Structure of the Earth 🌐 Plate tectonics
The mantle is the thickest layer of the Earth, located between the outer crust and the extremely hot core. It makes up approximately 84% of Earth’s total volume and acts as the “engine room” of the planet, driving the movement of tectonic plates and fueling volcanic activity. 🌋 🏗️ Structure and Composition The mantle is