1. Plate Tectonics: This is the driving force behind many other geological processes. It involves the movement of Earth's rigid outer layer (lithosphere) on a semi-molten layer (asthenosphere). This movement results in earthquakes, volcanic eruptions, mountain building, and the formation of continents and oceans.
2. Weathering: This is the breakdown of rocks, soils, and minerals through contact with Earth's atmosphere, water, and biological organisms. It can be physical (mechanical) like freeze-thaw or chemical like acid rain. Weathering creates sediments that are transported and deposited elsewhere.
3. Erosion: This is the movement of weathered material by agents like wind, water, or ice. It shapes the landscape by wearing down mountains, carving valleys, and depositing sediments in new locations. Erosion is responsible for the formation of many landforms, including canyons, sand dunes, and beaches.
4. Deposition: This is the process by which sediments, soil, and rocks are added to a landform. It is the result of erosion and occurs when the transporting force (water, wind, or ice) loses energy. Deposition creates landforms like deltas, alluvial fans, and sandbars.
5. The Rock Cycle: This is a continuous process where rocks are transformed from one type to another. It involves the interaction of weathering, erosion, deposition, compaction, cementation, and heat and pressure, leading to the formation of igneous, sedimentary, and metamorphic rocks.
These five major processes are interconnected and work together to shape the Earth's surface over vast periods of time.
