OrcasBostonHarborIslandsProject

I learned a lot on our field trip to George's Island. I learned that drumlins are piles of till left behind by glaciers. They have a certain shape, with the north side very steep and the south side a gentle slope. I also learned about the erosion of the island. The steep side keeps getting eroded by wind, water, and waves. Then the sand is deposited on the southern side of the drumlin. We saw evidence of erosion by the bluff on the North Beach. It was getting farther from the shore every year. Also, the island was shrinking. We noticed this because the wall that used to be far away from the waves was broken and falling down in places beacuse of wave erosion. You can click the link below to see my project on the creation of the Boston Harbor Islands: