Final Reflections

EQ: Why does the world look the way it does?

Answer: The World looks the way it does because of Erosion. Though, Natural disasters do have a say in this, the four types of erosion ( Water Erosion, Wind Erosion, Chemical Erosion and Glacier Erosion ) make a big difference.

     The first and biggest type of erosion, water erosion makes a difference, by digging ditches and canyons in the land. the water soaks into to sand and pushes the sand out into a big pile earth and sand at the bottom of the current. One example of this process is, the Wadi Degla, the Grand Canyon, and other valleys and canyons. In our experiments, we tested both: the water slowly falling on to the sand, and when the water quickly pours on to the sand. And when we used the bucket with the small hole it eroded the sand slowly and made a mini canyon. But, when we used the bucket with the big hole the water poured out quickly and went straight over the sand, without make a single sign in the smooth sand. This shows that water erosion happens depending on the force of water pushing on the eroding land. Finally, when we tried to control the and stop the water from flowing down into the bucket by building a damn, neither of our damns held. though, it may be possible control water flow, our makeshift weaker damns weren't able to hold four ounces of water.

     The second type of erosion we tried was wind erosion. This type of Erosion makes a big difference in how the world looks. The process of wind erosion makes rocks look the way they do, this is because ( Especially in the dessert ) the wind drives and picks up the sand and dirt in the air and rams it into rocks, causing the rocks to chip off a small piece of stone. Eventually, the rocks are a lot smaller than they used to be and most probably have a different shape than before. But, the wind can only carry the sand so high, so the bottom of the rocks are often thinner than the top of the rocks. these rocks are called, mushroom rocks. In our experiments, we tested blowing on a land form with a straw, and blowing on it with a wind gun. When we blew on it with a straw and the wind gun, the dry sand blew up in our face, along with the fake trees. But, when we blew on the wet sand near the pond, it hardly moved at all. This shows, that when wind blows on wet sand it has a weaker effect then when blown on dry sand.