8.ESS.3 - Glaciers & Waves

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12 Terms

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Glacier

A large, slow-moving mass of ice and snow formed on land over many years.

<p>A large, slow-moving mass of ice and snow formed on land over many years.</p>
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Continental Glacier

A massive, broad sheet of ice that spreads out over a huge land area, such as Antarctica or Greenland.

<p>A massive, broad sheet of ice that spreads out over a huge land area, such as Antarctica or Greenland.</p>
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Ice Age

A long geological period when global temperatures dropped significantly and extensive ice sheets covered large parts of the continents.

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Valley Glacier

A long, narrow mass of moving ice that forms high in the mountains and slowly flows downhill between steep peaks.

<p>A long, narrow mass of moving ice that forms high in the mountains and slowly flows downhill between steep peaks.</p>
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Plucking

The erosion process where moving glacial ice loosens, lifts, and carries away fractured pieces of bedrock.

<p>The erosion process where moving glacial ice loosens, lifts, and carries away fractured pieces of bedrock.</p>
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Till

An unsorted mixture of sediment, clay, sand, gravel, and boulders deposited directly by melting glacial ice.

<p>An unsorted mixture of sediment, clay, sand, gravel, and boulders deposited directly by melting glacial ice.</p>
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Moraine

A distinct ridge or mound of unsorted sediment left behind along the sides or front of a retreating glacier.

<p>A distinct ridge or mound of unsorted sediment left behind along the sides or front of a retreating glacier.</p>
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Kettle

A shallow, bowl-shaped depression or small lake formed when a buried chunk of glacial ice melts.

<p>A shallow, bowl-shaped depression or small lake formed when a buried chunk of glacial ice melts.</p>
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Headland

A high, steep coastal cliff of resistant rock that juts out into the ocean.

<p>A high, steep coastal cliff of resistant rock that juts out into the ocean.</p>
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Beach

A shoreline landform made up of wave-washed sand, gravel, or shell fragments along the edge of a body of water.

<p>A shoreline landform made up of wave-washed sand, gravel, or shell fragments along the edge of a body of water.</p>
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Longshore Drift

The movement of sand and sediment along a coastline caused by waves striking the shore at an angle.

<p>The movement of sand and sediment along a coastline caused by waves striking the shore at an angle.</p>
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Spit

An extended ridge of sand deposited by coastal currents that projects out from the shoreline into open water.

<p>An extended ridge of sand deposited by coastal currents that projects out from the shoreline into open water.</p>