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Glaciers
Glaciers are large, dynamic bodies of ice that form over long periods of time when snow accumulation exceeds ice ablation. They are among the most significant forces shaping Earth's landscape over long time scales. Glaciers are currently found at Earth's poles and in mid-latitude and equatorial mountains.
1,124 Questions
Compare contrast How wind and glaciers abrade rock?
Wind abrades rock by sandblasting, this is the process in which wind causes the blowing of millions of grains of sand, which bump across the surface of rocks.
Is it true that Eroded sediments pushed in front of a glacier are called moraines?
Yes, that is true. Moraines are piles of eroded sediments that are pushed in front of a glacier as it moves, either as a result of the glacier plucking rocks and debris as it moves or as it deposits material carried by the ice.
The climate covers areas in or near the polar regions, such as Antarctica and around the north and south pole, and on the top of the highest mountains.
What is The rock material deposited by glaciers as they melt and retreat?
They are known as moraines.
Cirques are interest areas in glaciated mountain regions, characterized by bowl-shaped depressions formed by glacial erosion. They often serve as the starting points for glaciers and can be found in various mountain ranges worldwide, such as the Rockies and the Himalayas. Cirques are significant for studying past glacial activity, climate change, and biodiversity, as they often harbor unique ecosystems. Additionally, their stunning landscapes make them popular destinations for hikers and climbers.
What did some of the passengers and crew compare the striking of the iceberg to?
Very little because until then, no major vessel had been sunken by ice. There were a few after Titanic but the last one was the Hans Hedtoft in 1959.
These moraines are abrasive elements carried in the bottom of a frozen glacier.?
Moraine contain fragmented rocks.
When boulders sand clay and silt that drop from a glacier when it retreats are called?
A moraine
drumlins
In what ways did glaciers change the face of no?
Glaciers significantly shaped the landscape of North America through processes like erosion and deposition. As glaciers advanced and retreated, they carved out valleys, created fjords, and sculpted mountains, resulting in iconic features such as the Great Lakes and many U-shaped valleys. Additionally, the movement of glaciers deposited various sediments, forming landforms like moraines and drumlins, which altered the topography and soil composition across vast areas. Overall, glaciers played a crucial role in defining the continent's geological features and ecosystems.
Why is ice in a glacier consider to be a mineral but water from a glacier is not?
By definition a mineral must be solid. Ice is solid. Water is not.
A large hole left behind by a glacier is called a(n)?
A hole in the ground left by a glacier is called a"kettle."
Many of these form shallow lakes, as with the kettle lakes in Wisconsin, Michigan, and Ontario.
This could also be called a cirque which is defined as a bowl-shaped, steep-walled mountain basin carved by glaciation, often containing a small, round lake. Cirque lake is a phrase used to describe these kinds of lakes.
Yes, an icicle has more than one cell for if it had one cell, we humans could not se it with the naked eye.
During the recent ice age glaciers covered almost what percent of earths land?
During the recent ice age, glaciers covered almost 30 percent of earths land.
The Boyd Glacier is located in Antarctica. It flows west-northwest for about 45 miles between Bailey Ridge and Mount Douglass.
What is the area of Glacier Peak Wilderness?
The area of Glacier Peak Wilderness is 2,314.802 square kilometers.
What is a Pleistocene glacier?
The Pleistocene is the geological epoch which lasted from about 2,588,000 to 11,700 years ago, spanning the world's recent period of repeated glaciations.
Charles Lyell introduced this term in 1839 to describe strata in Sicily that had at least 70% of their molluscan fauna still living today. This distinguished it from the older Pliocene Epoch, which Lyell had originally thought to be the youngest fossil rock layer. He constructed the name "Pleistocene" ("Most New" or "Newest") from the Greek.
This contrasting with the immediately preceding Pleiocene ("More New" or "Newer", from "more", and kainós; usual spelling: Pliocene), and the immediately subsequent Holocene ("wholly new" or "entirely new", from ὅλος, hólos, "whole", and kainós) epoch, which extends to the present time.
The Pleistocene is the first epoch of the Quaternary Period or sixth epoch. The end of the Pleistocene corresponds with the end of the last glacial period. It also corresponds with the end of the Paleolithic age used in Archaeology. In the ICS timescale, the Pleistocene is divided into four stages or ages, the Gelasian, Calabrian, Ionian and Tarantian. All of these stages were defined in southern Europe. In addition to this international subdivision, various regional subdivisions are often used.
Before a change finally confirmed in 2009 by the International Union of Geological Sciences, the time boundary between the Pleistocene and the preceding Pliocene was regarded as being at 1.806 million years before the present, as opposed to the currently accepted 2.588 million years BP: publications from the preceding years may use either definition of the period.
What is the shape of a valley left behind by a glacier?
The shape of a valley carved by a glacier is U shaped. A valley carved by a river is V shaped.
Which western state has more glaciers than the other 47 contiguous combined?
Washington State has over 75 percent of all glaciers in the contiguous United States, mostly on the Cascade volcanoes - which alone have over half the permanent ice. There are also sizeable glaciers in the Olympic Mountains futher west.
The reason for Washington State having the vast bulk of contiguous United States glaciers is that it has abundant moisture from the Aleutian Low. This very strong cyclone drives moist air over high mountains, which freeze this air and covert it into incredible quantities of snow at elevations over 10,000 feet. On the highest peaks of Alaska, mean annual snowfall can probably reach 150 metres or 5,900 inches, none of which will melt at the elevation of Mount Logan.
Whilst many other states of the American West reach similar elevations to Washington, none has the same enormous snowfall. California and Oregon have glaciers north of latitude 36 degrees, which become quite large on the Three Sisters, whilst Colorado, Montana and Wyoming have small glaciers.
The four southwestern states of Arizona, New Mexico, Utah and Nevada are so dry that glaciers cannot form even at mean annual temperatures below freezing.
Glaciers are generally not found in regions close to the equator where temperatures are consistently high. Additionally, glaciers are limited in desert areas with very low levels of precipitation. Areas with very low temperatures and limited snowfall may also not have glaciers.
