Glacier
Essential Question: How does the anatomy of a glacier evolve and
what does it effect.
Briefly relate glacial activity to Wegener’s Continental Drift
Theory in your journals.
The vast bulk of the water on Earth is regarded as saline or salt
water, with an average salinity of 3.5‰, though this varies slightly
according to the amount of runoff received from surrounding land.
In all, oceanic water, saline water from marginal seas, and water
from saline closed lakes amounts to over 98% of the water on Earth
is salt water.
2% of the Earths Remaining water is fresh water. Of that 2%
most is tied up in Glaciers, which account for about 75% of
the world's fresh water, and of this the Antarctic ice sheet
accounts for about 85%. Therefore if you do the math…
only about 0.5% of the Earth’s water is available for
consumption… and, when you think how much we abuse
and pollute our water…
How many miles is Mount Everest?
mt everest is 5.49 miles high. 29,029 feet tall, 5,280 feet in a mile.
How high is mount everest?
Mount Everest is 8848 mtrs above the sea level
How many ft is mount everest?
As of March 21, 2010, it is 29,035ft (8,850m).
How many deaths on mount everest?
about 120 corpses remain on mount everest today and a total of 2OO people died.
http://wiki.answers.com/Q/How_many_peaks_are_there_on_Mount_Everest
How many peaks are there on Mount Everest?
Glaciology (from Middle French dialect (Franco-Provençal): glace,
"ice"; or Latin: glacies, "frost, ice"; and Greek: λόγος, logos, "speech"
lit. "study of ice") is the study of glaciers, or more generally ice and
natural phenomena that involve ice.
Glaciology is an interdisciplinary earth science that integrates
geophysics, geology, physical geography, geomorphology,
climatology, meteorology, hydrology, biology, and ecology. The
impact of glaciers on humans adds the fields of human geography and
anthropology. The presence of ice on Mars and Europa brings in an
extraterrestrial/astronomy component to the field.
Match the following features to the numbers on the diagram.
Arête; Hanging Valley; Corrie (or Cirque); 'U' Shaped Valley; Alluvial Fan; Pyramidal
Peak or Horn; Corrie Lochan (or Tarn); Misfit Stream; Ribbon Lake; Truncated Spur;
Screes.
Answer
1 is a Pyramidal Peak or Glacial Horn because it has steep, triangular faces divided by
sharp ridges or arêtes.
2 is an Arête, because it is a sharp ridge between corries.
3 is a Corrie or Cirque, because it is an armchair shaped hollow with steep back and
sides.
4 is a Corrie Lochan or Tarn, because water has gathered in the hollow in the floor of
the corrie.
5 is an Alluvial Fan, because it is a fan shaped pile of rock remains (alluvium) washed
down by the stream and piled up where the steep valley side meets the valley floor.
6 is a Ribbon Lake, because it is a long narrow lake in a part of the valley cut deeper by
the glacier.
7 is a Truncated Spur, because the ridge has been cut off sharply by the ice that flowed
down the main valley.
8 is a Misfit Stream, because it is far too small to have cut the valley.
9 is a Hanging Valley, because the valley floor is much higher than the floor of the main
valley.
10 is a 'U' Shaped Valley, because it has steep sides and a nearly flat floor. (The other
side of the valley is missing in this cut-away
diagram.
A moraine is any glacially formed accumulation of unconsolidated glacial debris or till (soil
and rock) which can occur in currently glaciated and formerly glaciated regions, such as
those areas acted upon by a past ice age. This debris may have been plucked off the valley
floor as a glacier advanced or it may have fallen off the valley walls as a result of frost
wedging or landslide. Moraines may be composed of debris ranging in size from silt-sized
glacial flour to large boulders.
Anatomy of a Glacier
(1) head of glacier; (2) firn or névé; (3) region of ground moraine deposition; ( 4) terminal moraine; ( 5) drumlin; (6) braided stream; (7) kettle;
(2) ( 8) medial moraine; (9) lateral moraine; (10) U-shaped valley; (11) arête; (12) hanging valley; (13) Corrie or cirque;
(3) (14) Corrie Lochan
or Tarn; and (15) ice fall.
Drumlins. An elongated or teardrop shaped hillock, formed of till, found usually in swarms in lowland areas formerly occupied by a
glacier. Drumlins usually taper away from a steep slope that faced the incoming ice.
Firn is a type of snow that has been left over from past seasons and has been recrystallized into a substance denser than névé
young, granular type of snow which has been partially melted, refrozen and compacted, yet precedes the form of ice. .... ...
which is a
Glacier Poetry: http://www.youtube.com/watch?v=U84BbIRDyOA&NR=1&safety_mode=true&persist_safety_mode=1&safe=active
Glacier Features: http://www.youtube.com/watch?v=AuS9_WKL5-A
Video: http://www.youtube.com/watch?v=sVEStev3dqM&++_mode=true&persist_safety_mode=1
Inside a Glacier: http://www.neok12.com/php/watch.php?v=zX5171747376595d0f05647b&t=Glaciers