Stories of Our Earth Causes for Ice Ages and Their...

Will the ice ages happen again? Ice Ages are dramatically landform changing points in time when the temperatures around the world, including the atmosphere and the surface of the Earth, are consistently cold for spans of over thousands of years. Ice ages force a glacial period (when thick, large sheets of ice cover a massive portion of the Earth’s northern hemisphere). Studies show that ice used to cover approximately 30% of the Earth during our last ice age. A point in time can be classified as an ice age as long there are permanent ice sheets, ice glaciers of size over 50,000 km2. That’s roughly 9 football fields. So technically, we’re in the middle of an ice age because we still have large ice sheets such as Greenland and Antarctica.†¦show more content†¦Changes in land formations during the ice ages happened in different ways, but most of them relate to the process of glaciation. During the Ice Age, glaciation, the process of being covered by ice she ets took place over giant land masses and entire continents which is known as â€Å"continental glaciation†. As this large scale glaciation took place, changes in land formations occurred, that of which are uncommon to be formed today. They include moraines, drumlins, kames, eskers, and Kettle Lakes. Most of the evidence that was discovered has to do with the Earth’s geography, the physical features of the Earth. The ways these glaciers affected the landscape were separated into three different categories: erosion, transportation and deposition. Moraines are rocks and debris carried by glaciers, which are large masses of flowing ice and water that flow because of their heavyweight, and put into areas, especially near where they are rarely found. From this point, the debris that the moraines consists of can be classified as till, which is unsorted, randomly arranged material mixed together. 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