Curated OER
Soil Erosion
Students examine how erosion is affected by the composition of the soil and the slope of the land. They look at plant roots, rocks and land slope as experimental factors. They complete the associated worksheets before discussing their...
National Wildlife Federation
Quantifying Land Changes Over Time Using Landsat
"Humans have become a geologic agent comparable to erosion and [volcanic] eruptions ..." Paul J. Crutzen, a Nobel Prize-winning atmospheric chemist. Using Landsat imagery, scholars create a grid showing land use type, such as urban,...