The Impact of Glaciers on Earth's Surface
Glaciers, vast bodies of moving ice, play a significant role in shaping the Earth's surface by slowly moving and accumulating rocks and dirt. They cover about one-tenth of the Earth's surface and hold a large portion of the planet's fresh water as ice. Glaciers are found in various forms such as cirques, hanging glaciers, and valley glaciers, each contributing to the reshaping of landscapes over time. Understanding the formation, movement, and effects of glaciers provides valuable insights into the dynamic changes occurring on our planet.
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Presentation Transcript
Thinking About Glaciers Glaciers cover about one-tenth of the Earth s surface. Most of the fresh water found on the Earth is frozen in glaciers. Glaciers move very slowly and can cause very slow changes to the Earth s surface. What are glaciers? How do glaciers form? How do glaciers change our Earth?
Words to Know Glacier a large body of moving ice that stays frozen all year Iceberg a large mounded mass of ice that has broken away from a glacier and floats in the sea Moraine a ridge of rocks left by a glacier U-shaped valley low-lying area of land surrounded by higher ground formed by the movements of a glacier
What are Glaciers? Glaciers are large areas of ice and snow that move very slowly.
Where are Glaciers? Some glaciers are in mountains. Some glaciers hang on mountains. Some glaciers are in cirques, areas in mountains rubbed away by glaciers. Cirque Glacier Hanging Glacier
Where are Glaciers? Some glaciers are in mountain valleys. These glaciers look like rivers of ice and snow.
Valley Glaciers Valley glaciers move down mountains. As they move over the Earth s surface, rocks and dirt break off and are picked up by the glacier. The rocks and dirt become part of the glacier. Some glaciers are in mountains. Some glaciers hang on mountains. Some glaciers are in cirques, areas in mountains rubbed away by glaciers. Some glaciers are in mountain valleys. These glaciers look like rivers of ice and snow.
