Over billions of years, erosion has created land forms of various shapes and sizes present on Earth today. Erosion can also occur in short time scales, even over just a few minutes when severe events such as rainstorms wear away earth materials, like sand and gravel, causing even landslides in some places. Erosion can also transport these earth materials from land into nearby streams, rivers, and lakes, a phenomenon known as sedimentation. Minerals such as phosphorus can also be picked up by rainwater and flow into nearby water bodies, stimulating the growth of algae downstream. When soil is hydrophobic, or water-repellent, an effect often seen after a catastrophic fire in unhealthy forests, less water sinks into the ground and flooding can occur. With just a few materials from your home, you can set up this experiment to investigate the effects of wind and water on land. Try it out now!
2nd Grade Earth Explorers Teacher Academy | Erosion Changes Earth Surface Lesson: Erosion Experiment Demonstration | Arizona Project WET | #AZProjectWET
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About Arizona Project WET: Arizona Project WET (APW) develops water stewardship and STEM literacy by providing teacher professional development that evolves instructional practice and deepens content knowledge, direct student outreach that delivers or extends classroom learning, and community engagement. APW is a Cooperative Extension program through the University of Arizona.
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