Heavy rains and water run-off naturally erode soil. Humans make erosion happen faster by cutting down trees, removing shrubs and plants, and having too many animals on farmland. When soil is lost through erosion, it pollutes rivers, lakes, and other water systems. When soil is lost on farmlands, farmers cannot grow as many crops. Depleted soil produces crops that provide less nourishment to people.To understand this concept more clearly and in a fun way, I now introduce you to Bill Nye the Science Guy! Ta-ra! In this episode, Bill explores the science of erosion. This series of videos starts with what eronsion is all about and ends with answering what action humans can take to help prevent erosion.
1. Erosion part 1
2. Erosion part 2
3. Erosion part 3
The Ontario Curriculum - Unit: Understanding Matter and energy
Specific Expectation
- Assess the effect of the action of forces in nature on the natural and built environment, and identify ways in which human activities can reduce or enhance this impact
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