Tuesday, March 23, 2010

Erosion Experiment

We have been discussing erosion in Science 2.7 this week and today did an experiment on erosion, using graham cracker crumbs and cake mix for dirt and half/half and chocolate syrup for liquid (half/half was the established lake at the mountains, the chocolate syrup demonstrated the rain that would then freeze on the mountains, then thaw). We had a great time doing our experiment, and missed those of you who could not be here today, so we took pictures to show you!

This picture shows the beginning of our experiment - flat land with a pond. We discussed what wind and weather does to dirt, what drought does to the pond, and what flooding would do to affect the dirt/soil (especially since we noticed there were no trees planted, so that their roots could help hold in the soil!).





However, we wondered what would happen if we added mountains to our scene? How
would erosion affect that?








So, in our nice, quiet treeless are
a, it began to storm and we started to see the effects of erosion. It washed away dirt, sending it down the mountain. It flooded our clean lake, making it dirty. It froze on the mountaintops. When it became warmer, and the ice began to melt, we saw even MORE erosion! At the end, after much time had passed, we started to see less and less dirt in our scene. Check out our photos below!





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