â Companies like K Mart and Wal Mart offer an option agreement for warranties on their products, within a two year span of time after purchasing.
Erosion. 1  Rainfall-Rainfall can cause erosion both when the rain hits the surface of the Earth, called splash erosion, and when raindrops accumulate and flow like small streams. 2  Rivers-Rivers can create a significant amount of erosion over time. 3  They break up particles along the river bottom and carry them downstream.
The key to erosion is something called fluid flow. Water, air, and even ice are fluids because they tend to flow from one place to another due to the force of gravity. Of the three, liquid water is the most common agent of erosion because there's so much of it on the surface of the Earth. To see what kind of effects water has on a model landscape, try my Science Lab.