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Glaciers, formed from layers of snow compressing under pressure, play a crucial role in our planet's water cycle. As glaciers advance, they continually move downhill, but they can also retreat when snowfall decreases. This shifting behavior impacts water supply, as glaciers provide a reliable melt-water source for river systems, particularly in the Prairies. Understanding the dynamics of glacial formation and movement is essential for appreciating their vital contributions to ecosystems and water resources.
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2-Earth’s Frozen Water • Glacial formation • At the bottom of deep snow, pressure increases which will cause the bottom layer to turn to ice.
Glacial movement • Advancing • Glaciers are always moving down hill
Retreating • Glaciers retreat when they don’t accumulate as much snow as in previous years.
Importance of glaciers • Glaciers feed a constant supply of melt-water into the river systems of the Prairies.
