This tutorial provides some insight to the study of human impacts on water supplies.

This lesson introduces and describes the main types of erosion (i.e., chemical, water, wind, glacier and temperature). Young scholars learn examples of each type of erosion and discuss how erosion changes the surface of the Earth....

Students build a model to learn about the cycle of erosion and deposition by water and wind which deposits layer upon layer of rock, soil, and organic material to the surface.