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Glacier Bay, Great Lakes, and The Grand Canyon (idk about the Grand Canyon one but it was formed by the process of erosion so maybe)

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14y ago

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What are 3 ways a glacier can change the shape of land?

Glaciers can pick up and drop boulders Glaciers dig furrows in the ground where they have passed Glaciers are able to move mountains out of their way


Where are a majority of active glaciers in the lower 48 states found at?

A majority of active glaciers in the lower 48 states are found in the North Cascades of Washington state. These glaciers are primarily located in North Cascades National Park and Mount Rainier National Park. This region has some of the most glaciers in the contiguous United States.


What percentage of earth's water is useable water?

Approximately 3% of Earth's water is considered fresh water, and of that, only about 1% is readily accessible for human use in rivers, lakes, and groundwater. The rest is tied up in ice caps and glaciers.


What percent of earths fresh water?

Yes. About 3% of the water on Earth is "fresh water" (not salt water), but 2/3 of that is locked up in sea ice, glaciers, and ice caps. So about 1% is "available fresh water" and most of that exists in underground aquifers, which is not always renewed as fast as it is used. Only about 1/100 of 1 percent of the total fresh water is present in springs, rivers, lakes, and swamps.


What do glaciers leave behind as evidence of their existence?

1) Glaciers carve fjords in valleys where they travel. A fjord is a long, narrow valley with steep sides carved by glacial movement. A fjord represents the seaward end of a deeply excavated glacial-trough valley that was partially submerged by drowning after melting of the ice. 2) Glaciers leave behind deposits known as glacial till, which are unstratified, poorly-sorted sediments. Glaciers move a wide range of sedimentary particles from small clay-sized particles to large boulders. When the glacier either melts or retreats, these poorly-sorted sediments are deposited. These deposits are known as tillite in lithified sedimentary rocks. 3) A mound or ridge of till (unstratified glacial drift) is deposited when a glacier begins to retreat or melt. As the glacier grows and extends, it pushes glacial drift at its front forming a mound of debris. This glacial drift is then dropped in place when the glacier retreats or melts which creates a terminal moraine. Medial moraines, which are formed by the conjunction of two glaciers, are also deposited as a glacial melts. Glaciers erode the sides of the valleys in which they travel. Therefore, when two glaciers unite (in much the same rivers unite), a line of glacial drift (medial moraines) from both glaciers is formed. 4) Glaciers leave scrape marks behind on the rocks on which they traveled.