What are the two mechanisms by which glaciers move quizlet?
Glaciers move by two mechanisms: basal slip and plastic flow. In BASAL SLIP, the entire glacier slides over the bedrock. In PLASTIC FLOW, the ice flows as a viscous fluid. (B) To form a cirque, snow accumulates, and a glacier begins to flow from the summit of a peak.
What are the two types of glaciers quizlet?
Two kinds of glaciers are continental glaciers and valley glaciers.
What process moves a glacier quizlet?
A glacier that moves by basal slip can work its way over small barriers by… The process by which glaciers flow slowly as grains of ice deform under pressure and slide over each other.
Which process occurs where a glacier enters the sea?
Calving. The process by which pieces of ice break away from the terminus of a glacier that ends in a body of water or from the edge of a floating ice shelf that ends in the ocean. Once they enter the water, the pieces are called icebergs.
What are the two processes that cause glacial erosion?
Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice. Abrasion is the process in which a glacier scrapes underlying rock.
What are the two processes that cause glacial erosion quizlet?
The two main processes that lead to glacial erosion are plucking and abrasion.
What are the 2 basic types of glaciers?
There are two main types of glaciers: continental glaciers and alpine glaciers. Latitude, topography, and global and regional climate patterns are important controls on the distribution and size of these glaciers.
What are the two basic types in which a glacier moves?
The two basic types of glaciers are Valley Glaciers (found in valleys that were once streams) and Ice Sheets (found on large regions of land). Describe how glaciers move.
Which one of the following is true of glaciers quizlet?
Which one of the following is true of glaciers? They originate on land. You just studied 28 terms!
What is the process of a glacier breaking off into a sea or lake quizlet?
Calving. the process of a glacier breaking off into a sea or lake.
What are two processes that cause glacial erosion quizlet?
The two main processes that lead to glacial erosion are plucking and abrasion.
What are the mechanisms at work in erosion by glaciers?
The primary processes of glacial erosion are plucking, abrasion, and physical and chemical erosion by subglacial water.
What are the two main processes of glacial erosion?
Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice. Abrasion is the process in which a glacier scrapes underlying rock.
What are 2 types of glaciers and where are they found?
There are two primary types of glaciers: Continental: Ice sheets are dome-shaped glaciers that flow away from a central region and are largely unaffected by underlying topography (e.g., Greenland and Antarctic ice sheets); Alpine or valley: glaciers in mountains that flow down valleys.
What are the 2 processes by which glaciers erode the underlying rock?
Glacial Erosion Abrasion involves scratching the bedrock with debris in the basal ice. Plucking is removal of entire chunks of rock.
What two features were created by glaciers?
Glaciers carve a set of distinctive, steep-walled, flat-bottomed valleys. U-shaped valleys, fjords, and hanging valleys are examples of the kinds of valleys glaciers can erode.
Which of the following is true of flowing water and glacial ice?
Which of the following statements is true of flowing water and glacial ice? Flowing water will sort sediment based on clast size; glacial ice will not.
How do glaciers move?
Glaciers move by internal deformation of the ice, and by sliding over the rocks and sediments at the base. Internal deformation occurs when the weight and mass of a glacier causes it to spread out due to gravity. Sliding occurs when the glacier slides on a thin layer of water at the bottom of the glacier.
What is the major input source for glaciers?
The main input to the glacier system is through precipitation in the form of snow. Ice and snow can also be inputted to the glacial system through avalanches which can occur both naturally and due to human activity in mountain areas. Inputs to a glacier result in accumulation.
What are the types of glaciers quizlet?
Terms in this set (7)
- Alpine glaciers. Alpine glaciers are similar to mountain ranges. …
- Cirque glacier. A cirque glacier is valley made by glacial erosion. …
- Valley glaciers. Valley glaciers are large alpine glaciers that flow down mountain valleys. …
- Piedmont glacier. …
- Tidewater glaciers. …
- Ice sheet. …
- Ice cap.
What are 2 basic processes of glacial erosion?
Processes of Glacial Erosion Glacial erosion involves the removal and transport of bedrock or sediment by three main processes: quarrying (also known as plucking), abrasion, and melt water erosion.
What two main types of glacial erosion are abrasion and?
Glaciers cause erosion in two main ways: plucking and abrasion.
- Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice.
- Abrasion is the process in which a glacier scrapes underlying rock.
Dec 5, 2021
Which processes from glaciers?
There are two main processes of glacial erosion. Plucking is the erosion and transport of large chunks of rocks that stick to and get picked up by the glacier. Abrasion is the erosion that occurs when particles scrape against each other.
What are the 2 main types of glacier?
There are two main types of glaciers: continental glaciers and alpine glaciers. Latitude, topography, and global and regional climate patterns are important controls on the distribution and size of these glaciers.
What are the two main types of glacial erosion?
It's generally agreed that there are two kinds of erosional activity of glaciers: abrasion and plucking (also called quarrying). These affect bedrock on different scales (although there are intergradations).
Which processes form glaciers?
Glaciers begin to form when snow remains in the same area year-round, where enough snow accumulates to transform into ice. Each year, new layers of snow bury and compress the previous layers. This compression forces the snow to re-crystallize, forming grains similar in size and shape to grains of sugar.
What are glacial processes?
Two fifths of the Arctic is covered by permanent snow and ice that remains frozen throughout the year. This area is dominated by glacial processes and landforms. Glaciers form when the amount of snow and ice that accumulates in the winter is greater than the amount that melts in the summer.
What is glacial flow?
In simple terms, for a glacier to maintain a state of equilibrium, glacier flow is required to balance inputs and outputs to the system. Glacier motion facilitates the transfer of ice from the accumulation zone (where mass gain is dominant) to the ablation zone (where mass loss is dominant).
What is plastic flow in glaciers?
Basal sliding and plastic flow. This process is called basal sliding. In addition to basal sliding, which slowly moves the glacier downslope as a unit, plastic flow causes glacial ice buried underneath more than about 50 meters to move like a slow‐moving, plastic stream.
What are the two types of glacial movement?
Glaciers flow through ice deformation and sliding Glaciers always flow downslope, through the processes of deformation and sliding.