Erosion - National Geographic Society
Apr 23, 2024 · Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water. A similar process, weathering , breaks down or dissolves rock , but does not involve movement.
Erosion - National Geographic Society
Erosion is the process where rocks are broken down by natural forces such as wind or water. There are two main types of erosion: chemical and physical. Chemical erosion occurs when a rock’s chemical composition changes, such as when iron …
The Rock Cycle - National Geographic Society
Dec 13, 2023 · The formation of clastic and organic rocks begins with the weathering, or breaking down, of the exposed rock into small fragments. Through the process of erosion, these fragments are removed from their source and transported by wind, water, ice, or …
Weathering - National Geographic Society
Apr 24, 2024 · Weathering is the breaking down or dissolving of rocks and minerals on Earth's surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
The process of erosion moves bits of rock or soil from one place to another. Most erosion is performed by water, wind, or ice (usually in the form of a glacier).
Walter's Travels - Weathering and Erosion - National Geographic …
Sep 20, 2024 · Meet Walter, a friendly animal who will guide you on your quest for knowledge about erosion and weathering. You will begin your journey by doing different activities to that will simulate weathering and erosion.
Runoff - National Geographic Society
Oct 19, 2023 · In the process of erosion, runoff can carry away the fertile layer of topsoil. Farmers rely on topsoil to grow crops. Tons of topsoil are lost to runoff every year. People can limit runoff pollution in many ways. Farmers and gardeners can reduce the amount of fertilizer they use. Urban areas can reduce the number of impervious surfaces.
Glaciation - National Geographic Society
Oct 19, 2023 · While most glaciation is cause by erosion, glaciers also pick up things like rocks and move them in a process called deposition. As a glacier moves, it scratches Earth’s surface, picking up everything from small rocks to boulders the size of a house.
Waterfall - National Geographic Society
Oct 19, 2023 · A waterfall is a river or other body of water's steep fall over a rocky ledge into a plunge pool below. Waterfalls are also called cascades. The process of erosion, the wearing away of earth, plays an important part in the formation of waterfalls. Waterfalls themselves also contribute to erosion.
Understanding Droughts - National Geographic Society
Apr 3, 2024 · As the soil becomes drier, it is vulnerable to erosion. This process can lead to fertile land becoming desert -like, a process known as desertification . The desertification of the Sahel in North Africa is partly blamed on a prolonged drought whose effects were intensified by farming practices that result in overgrazing .
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