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What are 2 forces caused by glaciers moving?
As glaciers move, they exert two primary forces: basal sliding and internal deformation. Basal sliding occurs when the glacier's weight and meltwater create lubrication at its base, allowing it to slide over the ground. Internal deformation involves the movement of ice within the glacier itself, where the weight causes the ice to flow and deform under pressure, leading to the glacier's overall advance or retreat. These forces shape the landscape, carving valleys and transporting sediments.
How can alpine glaciers create these features?
Alpine glaciers create distinctive features through processes of erosion and deposition. As glaciers move down mountainous terrain, they carve out U-shaped valleys and sharp peaks, known as horns, through abrasion and plucking of rock. Additionally, when glaciers melt, they deposit sediment in the form of moraines, which are ridges of debris left at the glacier's edge. These processes collectively shape the dramatic landscapes characteristic of alpine environments.
Lines that create a sense of movement and direction are called?
They are called implied lines.
When windblown sediments settle behind an obstacle what is created?
When windblown sediments settle behind an obstacle, they create a feature known as a dune. Dunes are typically formed as the wind slows down and loses its ability to carry the sediment, allowing it to accumulate in mounds or ridges. The shape and size of the dune can vary based on wind direction, sediment availability, and vegetation. These formations are common in desert environments and along coastlines.
When someone pays an artist to create a work of art it is called?
commisioned
What type of moraine form Materials bulldozed at the front of the glacier?
The type of moraine formed by materials bulldozed at the front of a glacier is called a terminal moraine. This accumulation of debris marks the furthest advance of the glacier and typically consists of a mix of soil, rocks, and other sediments that have been pushed forward as the glacier moves. Terminal moraines often create a distinct ridge or hill-like formation at the glacier's edge.
When sediments fall out a glaciers they create a deposit called?
There are actually two (2) types of deposits created - Glacial Tills or Fluvials/Outwashes.Tills are basically formed when the receding ice drops what it picked up in piles of debris fields. These can be located at the receding end of the glacier, but can also be formed underneath the glacier as it moves downhill.Fluvials are basically formed when the deposited debris is moved away from the receding glacier by water or wind to a different location sometimes far away from the glacier.The rock content of the Glacial Tills and Fluvials can be left as anything from whole, big boulders or a pile of flour. Rock flour, that is.Rock flour, also known as Glacier Meal, is the pulverized remains of all those boulders that the glacier grinds down into a fine powder as it heads "downstream." This powder can be extremely fine, down to .0006mm (that's almost seven times smaller than a human hair).As the water from the melting ice and snow gathers into a stream, it often carries with it the rock flour turning the water a milky-white haze that's known as Glacier Milk. The glacial milk is swept away from the glacier until the flowing water slows enough for the fine, powdery rock flour to settle to the bottom of a pool, lake or even the ocean forming a fluvial.
Can a glacier create a forest?
No, a glacier cannot
What are 3 ways a glacier can change the shape of land?
Glaciers can pick up and drop boulders Glaciers dig furrows in the ground where they have passed Glaciers are able to move mountains out of their way
When a glacier stops moving forward an out wash may be deposited in front of it?
Yes, when a glacier stops moving forward, it may deposit an outwash of sediment and debris in front of it. This outwash is typically comprised of materials that were previously carried by the glacier and are now released as it melts or retreats. It can create features like moraines and eskers in the landscape.
Where does the Rio Grande deposit sediments?
The Rio Grande deposits sediments primarily in its delta region where it empties into the Gulf of Mexico. It also deposits sediments along its banks and floodplains as it flows through various landscapes, including mountainous and arid regions. Additionally, the river can create sedimentary features like bars and islands within its channel.
Which forms as a glacier moves into a stream valley?
As a glacier moves into a stream valley, it can create a U-shaped valley by eroding the valley floor and walls. The glacier may also deposit sediment along the valley as it retreats, forming features like moraines and outwash plains. Additionally, meltwater from the glacier can lead to the formation of kettle lakes and braided streams in the valley.
Why can glacier deposits form in Africa?
Glacier deposits can form in Africa due to historical climatic changes, particularly during the ice ages when temperatures were significantly cooler. Regions such as the East African Highlands and the Atlas Mountains in North Africa may have experienced glaciation, allowing glaciers to carve and deposit sediments. Additionally, geological processes, like uplift and tectonic activity, can create conditions conducive to glaciation, even in typically warm climates. Evidence of past glacial activity is found in the form of moraines and striations in these areas.
What is a common offshore deposit of sand called?
A common offshore deposit of sand is called a sandbar or shoal. These formations can create shallow areas in bodies of water, making them hazardous for navigation.
What is a deposit of sediment where a stream enters a larger body of water?
A deposit of sediment where a stream enters a larger body of water is called a delta. Deltas form as the stream slows down upon meeting the larger body of water, causing sediments carried by the water to settle out. This accumulation of sediment can create fertile land and diverse ecosystems. Deltas are typically triangular or fan-shaped in appearance.
Which volcanic hazard occurs when melted snow or excessive rain mixes with volcanic sediments?
This can create volcanic mudflows called lahars.
How does a glacier create a canyon?
It melts and leaves a canyon
