Weathering and erosion are similar in that they both work together to change and shape the Earth's surface. While weathering breaks rock and earth down, erosion is the displacement of the pieces and particles of rock and earth.Continue Reading
Weathering breaks down and degrades the surface of the Earth through mechanical or chemical processes. Mechanical weathering happens when rocks break apart in response to environmental effects. Water is an important weathering agent as it infiltrates rock crevices. If the water carries salt, the build-up of salt begins to crack the rock due to pressure. Water inside rocks can also freeze and crack the rock. Invading tree roots and tunneling animals also cause rocks to crack apart.
Chemical weathering is often the result of water with some acid content, either from the air or soil. This acid dissolves rock, causing it to break or wear away. Limestone is especially prone to dissolution by chemical weathering. Water flow hollows out limestone formations to create tunnels and cave systems.
Water is also an important factor in erosion. The same water flow that seeps into rocks to freeze and crack them or that transports acids to wear away limestone, also carries away the broken or worn pieces.Learn more about Erosion & Weathering
Wind erosion happens when pieces of the Earth are worn away by strong winds over time, and water erosion happens when moving water such as ocean waves wear away rock instead of seeping into the ground. Water is a more powerful erosion force than wind.Full Answer >
Weathering refers to the process of wearing away, dissolving or breaking down rocks that are found near or at the surface of the Earth. National Geographic notes three types of weathering processes: mechanical, chemical and biological or organic.Full Answer >
Erosion changes the Earth's surface by a process of breaking down and displacing soil and other material caused by wind, rain and other types of weathering. Erosion may cause soil in a region to be loosened, transported and deposited in a new area.Full Answer >
A combination of wind blowing parallel to a coastline combined with the rotation of the Earth pushes surface waters away from the coast and causes upwelling. Upwelling is the flow of water from deep in the ocean to the surface, adding cold and nutrient-rich water to the coastal waters.Full Answer >