Glacier: Any large mass of ice that moves slowly over land.

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Presentation transcript:

Glacier: Any large mass of ice that moves slowly over land

VALLEY GLACIER:CONTINENTAL GLACIER:

Valley Glacier: A long, narrow glacier that forms when snow and ice build up in a mountain valley - Found on high mountains - Stay in valley/follow valley

Continental Glacier: A glacier that covers much of a continent or large island - Larger than valley glaciers - Spread out in all directions

Ice Ages: Times in the past when continental glaciers covered large parts of Earth’s surface

Ice Ages: Times in the past when continental glaciers covered large parts of Earth’s surface

 Form where more snow falls than melts  Pressure compacts snow into ice  Gravity pulls glacier downhill

PLUCKING  The process by which a glacier picks up rocks as it flows over the land ABRASION  Rocks stick to the bottom of glacier, scrape across the land, and scratch bedrock

Till: The sediment deposited by a glacier

Fjord: A glacial valley filled with seawater Erosion

Fjord: A glacial valley filled with seawater Erosion

Horn: A sharpened peak on top of a mountain – glaciers have carved away the sides Erosion

Horn: A sharpened peak on top of a mountain – glaciers have carved away the sides Erosion

Cirque: A bowl- shaped hollow area eroded by a glacier Erosion

Cirque: A bowl- shaped hollow area eroded by a glacier Erosion

Arête: A sharp ridge separating two cirques Erosion

Arête: A sharp ridge separating two cirques Erosion

Glacial Lake: A long lake, eroded by plucking and abrasion Erosion

Glacial Lake: A long lake, eroded by plucking and abrasion Erosion

U-Shaped Valley: Shape of a valley created by a glacier Erosion

U-Shaped Valley: Shape of a valley created by a glacier Erosion

Moraine: A ridge formed by the till deposited at the edge of a glacier Deposition

Moraine: A ridge formed by the till deposited at the edge of a glacier Deposition

Drumlin: A long mound of till that is smoothed in the direction of a glacier’s flow Deposition

Drumlin: A long mound of till that is smoothed in the direction of a glacier’s flow Deposition

Kettle Lake: Forms when melting ice forms a depression in till and it fills with water No water = Kettle Deposition

Kettle Lake: Forms when melting ice forms a depression in till and it fills with water No water = Kettle Deposition