This site provides an idea and an example of an experiment that helps students learn about erosion and the different types of soil or rock and how they interact with other elements in nature. A flip chart and worksheet packet is sold by TPT.
Soil Erosion Experiment This might look like such a simple experiment but it will definitely show the importance of having vegetation covering the soil to your kids! They will love this hands on exper (Garden Step Long)
This Easy Erosion Experiment for Kids is a great candy science experiment you can set up in just 2 minutes! Teach kids about geology & learn how water can shape rock. Fourth Grade Earth and Space Science