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29 Cards in this Set
- Front
- Back
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Alpine (valley) glacier |
flow downhill from where the snow and ice accumulates through mountains along existing valleys. |
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Bergschrund |
A crevasse near the top of a glacier where moving |
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continental glacier |
A sheet of ice covering a large a area that is confined to a valley. |
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crevasse |
a deep crack in a glacier that forms as a result of ice movement |
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glacier |
large sheet of flowing ice |
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zone of ablation
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the lower part of a glacier where the amount of snow and ice that melts off is greater than the amount that accumulates |
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zone of accumulation |
the upper part of a glacier where the amount of snow and ice that accumulates is great than the mount that melts off. |
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Erratic |
not even or regular in pattern or movement |
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Horn |
a hard permanent outgrowth, often curved and pointed, found in pairs on the heads of cattle, sheep, goats, giraffes, |
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Moraine |
a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity. |
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Arete |
a sharp mountain ridge. |
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Kettle |
a container or device in which water is boiled, having a lid, spout, and handle |
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Interglacial period |
is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periodswithin an ice age. |
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Ice age |
a glacial episode during a past geological period. |
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Precession |
the slow movement of the axis of a spinning body around another axis due to a torque |
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Glacial period |
a period in the earth's history when polar and mountain ice sheets were unusually extensive across the earth's surface. |
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Eccentricity |
the quality of being eccentric. |
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Firn |
granular snow, especially on the upper part of a glacier, where it has not yet been compressed into ice. |
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Till |
less formal way of saying until. |
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Snowfield |
a permanent wide expanse of snow in mountainous or polar regions. |
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Iceberg |
a large floating mass of ice detached from a glacier or ice sheet and carried out to sea. |
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Ice sheet |
a permanent layer of ice covering an extensive tract of land, especially a polar region. |
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Ice shelf |
a floating sheet of ice permanently attached to a landmass. |
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Ice pack |
a bag filled with ice and applied to the body to reduce swelling or lower temperature. |
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Cirque |
a half-open steep-sided hollow at the head of a valley or on a mountainside, formed by glacial erosion. |
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Milankovitch theory |
is an explanation of long term climate change |
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Glacial lake |
is a lake with origins in a melted glacier. |
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Esker |
a long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet. |
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Snowline |
the altitude above which some snow remains on the ground in a particular place throughout the year. |
