
Erosion - Education | National Geographic Society
Apr 4, 2025 · Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion and gully erosion. Splash erosion describes the impact of a falling raindrop, which can …
Weathering - Education | National Geographic Society
4 days ago · Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how …
Runoff - Education | National Geographic Society
Oct 19, 2023 · Glaciers, snow, and rain all contribute to this natural runoff. Runoff also occurs naturally as soil is eroded and carried to various bodies of water. Even toxic chemicals enter …
Understanding Droughts - Education
Nov 13, 2024 · Negative impacts include damage to habitats, loss of biodiversity, soil erosion, and an increased risk from wildfires. During the U.S. drought of 1988, rainfall in many states was …
Sedimentary Rocks - National Geographic Society
Oct 19, 2023 · The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification. Erosion and …
Landslide - Education | National Geographic Society
Apr 26, 2024 · A classic morphological cause of landslides is erosion, or weakening of earth due to water. In April 1983, the U.S. town of Thistle, Utah, experienced a devastating landslide …
Weathering - Education | National Geographic Society
There are two main types of weathering: chemical and physical. An example of chemical weathering is acid rain. Caused mostly by the burning of fossil fuels, acid rain is a form of …
Flood - Education | National Geographic Society
Heavy rain, a broken dam or levee, rapid icemelt in the mountains, or even a beaver dam in a vulnerable spot can overwhelm a river and send it spreading over nearby land. The land …
Once the rock has been broken down, a process called erosion transports the bits of rock and minerals away. No rock on Earths surface is hard enough to resist weathering.
The Many Effects of Flooding - National Geographic Society
Apr 4, 2025 · Floods Cause Sedimentation and Erosion Floodwater can also alter the landscape, for instance, by eroding riverbanks and causing them to collapse. As floodwater carries …