AY Honors/Glaciers/Answer Key - Revision history

Jomegat: twoer->tower

2024-05-25T19:23:05Z

twoer->tower

RABaker96 at 15:53, 25 May 2024

2024-05-25T15:53:58Z

RABaker96 at 18:49, 23 May 2024

2024-05-23T18:49:16Z

RABaker96 at 18:17, 23 May 2024

2024-05-23T18:17:42Z

RABaker96 at 13:45, 23 May 2024

2024-05-23T13:45:23Z

RABaker96 at 13:41, 23 May 2024

2024-05-23T13:41:42Z

RABaker96 at 22:09, 13 May 2024

2024-05-13T22:09:04Z

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W126jep at 00:06, 2 May 2024

2024-05-02T00:06:13Z

W126jep: Marked this version for translation

2024-03-19T22:07:45Z

Marked this version for translation

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W126jep: + Answer Key for Glaciers 2024 NAD Honor

2024-03-19T21:41:56Z

+ Answer Key for Glaciers 2024 NAD Honor

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==References==

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 <!-- k. Serac -->
-A serac is a jagged pinnacle or twoer of ice on a glacier.
+A serac is a jagged pinnacle or tower of ice on a glacier.
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 <!-- c. Glacial drift -->
 Glacial drift is the term for sediment and debris moved or deposited by a glacier, whether directly through physical erosion and movement, or indirectly, as in debris moved further by water from a melting glacier.
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 <!-- d. Glacial erratic -->
 A glacial erratic is a rock or boulder transported by a glacier and left behind when the glacier retreats.
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 <!-- e. Glacial lake -->
-A glacial lake is a pool of standing water on, in, or under a glacier.
+[[File:Glacial Lake.jpg|thumb|A glacial lake at the terminus of a former glacier]]A glacial lake is a pool of standing water on, in, or under a glacier, or formed by a glacier, often near its terminus.
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 <!-- f. Icefall -->
 An icefall is the equivalent of a glacial "waterfall," and occurs where a glacier moves over a steep gradient, fracturing the surface of the glacier.

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 <!-- a. Crevasse -->
-A crevasse is a crack in the surface of a moving glacier. Crevasses may be narrow or wide, shallow or deep.
+[[File:Glacier Crevasse.jpg|thumb|A Crevasse on a glacier]] A crevasse is a crack in the surface of a moving glacier. Crevasses may be narrow or wide, shallow or deep.
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← Older revision		Revision as of 13:41, 23 May 2024
Line 182:		Line 182:

	The main types of continental glaciers are Ice Sheets (covering more than 50,000 square kilometers, and currently including only the Greenland and Antarctic Ice Sheets) and Ice Caps, which are continental glaciers covering less than 50,000 square kilometers. A further extension of continental glaciers are Ice Shlfs - which are floating extensions of large glaciers into the water.		The main types of continental glaciers are Ice Sheets (covering more than 50,000 square kilometers, and currently including only the Greenland and Antarctic Ice Sheets) and Ice Caps, which are continental glaciers covering less than 50,000 square kilometers. A further extension of continental glaciers are Ice Shlfs - which are floating extensions of large glaciers into the water.
		+	[[File:Alpine Glacier.jpg\|thumb\|300px\|Apline Glaciers]]
		+	Alpine glaciers form in mountains, are much smaller than continental glaciers, and may in fact be part of larger continental glaciers. Four main categories of alpine glaciers are Cirque Glaciers (which form in bowl-like depressions in the mountains, and may feed other glacier types), Valley Glaciers (glaciers flowing through valleys), Piedmont Glaciers (Glaciers that flow out of valleys and canyons onto flatter lowlands), and Ice Fields, which may be larger conglomerations of glacial ice forming in the mountains and feeding several valley or piedmont glaciers.
		+

−	Alpine glaciers form in mountains, are much smaller than continental glaciers, and may in fact be part of larger continental glaciers. Four main categories of alpine glaciers are Cirque Glaciers (which form in bowl-like depressions in the mountains, and may feed other glacier types), Valley Glaciers (glaciers flowing through valleys), Piedmont Glaciers (Glaciers that flow out of valleys and canyons onto flatter lowlands), and Ice Fields, which may be larger conglomerations of glacial ice forming in the mountains and feeding several valley or piedmont glaciers.

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-<!-- 3. How do glaciers form? Where can they be found? On a map, highlight the places glaciers can be found today. -->
+<!-- 3. How are glaciers formed? Where can they be found? On a map, highlight the places glaciers can be found today. -->
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 <!-- f. Icefall -->
+[[File:Glacial Icefall.jpg|thumb|A glacial icefall - note the more jumbled appearance in the center where the slope is steeper]]
 An icefall is the equivalent of a glacial "waterfall," and occurs where a glacier moves over a steep gradient, fracturing the surface of the glacier.
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 <!-- g. Kettle lake -->
 A kettle lake forms when glacial ice in an outwash plain melts in a depression.
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 <!-- l. Subglacial stream -->
 As the name implies, a subglacial stream is a stream that flows beneath a glacier.
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 <!-- n. Terminus -->
 The terminus (or tow) of a glacier is the furthest/lower margin of a glacier - ie the "end" of the glacier.
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 <!-- 7. Know the difference between valleys formed by rivers and streams, and valleys formed by glaciers. -->
 In general, a valley formed by a river or stream is described as V shaped, whereas a glacial valley is U shaped.
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 <!-- a. Arête -->
 An Arête is the sharp, jagged peak that separates two glaciers or cirques.
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 <!-- b. Cirque -->
 A Cirque is a bowl-shaped depression in alpine areas formed by a glacier.
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 <!-- i. Nunatak -->
 A Nunatak is a mountain peak that protrudes through a glacier, or through where two or more glaciers meet and converge.
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 <!-- l. Striation -->
 Striations refer to the lines and grooved carved into bedrock by a passing glacier. As the glacier moves, it also drags along rocks and other debris, and this scours the underlying rock, leaving the scratch marks.
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 <!-- m. Trim line -->
 The Trim Line is the boundary on a glacial valley wall that shows the previous maximum width of the glacier.
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 Terminal Moraine, which forms at the terminus or maximum extent of a glacier
 Lateral Moraine, which forms along the edge of a glacier from falling debris or eroded from the valley walls
 Medial Moraine, which runs parallel to a glacier, but forms wheere two glaciers merge into a single flow
 Recessional Moraine, which forms as smaller accumulations behind the terminal moraine, and marks shorter periods of eadvance and retreat