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, […]
Chemical compound essential to life and one of the most abundant substances on Earth Water is a chemical compound composed of two hydrogen atoms and one oxygen atom, forming the molecular formula H₂O. It is one of the most important substances in the natural world, serving as the primary solvent for biological systems, a key
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