Water Weight Erosion

How does the weight of water affect the earth? Find a spot of bare dry earth. Pour a cupful of water on it. Repeat on the same spot, but this time hold the cup from as high a distance as possible. Observe how did the earth change when you poured your first cupful of water? How did it change when you poured the second cupful from a greater height? Can you relate this to changes caused by the weight of water in various places around the earth?

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