Episode 128: Wind, Deserts, and Coasts
The Science of Everything Podcast
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What Is the Difference Between Abrasion and Attrition in Desert Environments?
Third form of rosion that's dominant in earlin environments is called attrition. Attrition is the wearing down of particles caused by collisions when those particles are stuck in a moving fluid or entrained in amoving fluid. So what attrition tends to do is round down and smooth out the sand grains. And they give them a very distinctive sort of frosted, kind of polished appearance,. which you don't typically get from sand grains in the beach or elsewhere.
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