What is the origin of curved ridges in the Great Lakes area quizlet?
What do these curved ridges (eskers) suggest happened on the landscape? Meltwater channels were below or within a glacier. humans mine them as a source of gravel.
What carved this U shaped valley quizlet?
U-shaped valleys, trough valleys or glacial troughs, are formed by the process of glaciation. … They have a characteristic U shape, with steep, straight sides and a flat bottom. Glaciated valleys are formed when a glacier travels across and down a slope, carving the valley by the action of scouring.
What is this bowl shaped glacially carved feature quizlet?
cirque. a bowl-shaped hollow eroded by a glacier.
What happens to the land surface when large ice sheets melt away quizlet?
What happens to the land surface when large ice sheets melt away? The land flexes upward due to isostatic rebound.
What is till quizlet?
Till or glacial till is unsorted glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines.
Which of the following is true about how Waves form and break upon the shore quizlet?
Which of the following is true about how waves form and break upon the shore? Waves begin to change when they reach water shallower than wave base. How do waves propagate across the water? The wave moves forward, but water moves in a circular motion.
What is the bowl-shaped hollow from which alpine glaciers originate?
Alpine glaciers begin high up in the mountains in bowl-shaped hollows called cirques. As the glacier grows, the ice slowly flows out of the cirque and into a valley.
What is the bull shaped hollow from which alpine glaciers originate?
A corrie. What is a cirque? A bowl-shaped depression carved out of a mountain by an alpine glacier.
What carved this U shaped valley?
Valley glaciers Valley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. During periods when Earth's climate cools, glaciers form and begin to flow downslope. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers.
What is a bowl shaped basin carved by a glacier on the side of a mountain?
Cirque. A bowl-shaped, amphitheater-like depression eroded into the head or the side of a glacier valley. Typically, a cirque has a lip at its lower end.
Where tributary glaciers come together the adjacent lateral moraines join and are carried Downglacier as a single long ridge of till known as a N?
rock fall debris form the steep cliffs that border valley glaciers accumulates alnog the edges of ice to form lateral moraines. Tributary glaciers come together, the adjacent lateral moraines join and are carried down glacier as a single long ridge of til known as a medial moraine.
When an ice block that was buried in sediment finally melts a depression called a ___ forms?
Glaciers
| Question | Answer |
|---|---|
| The central portion of a valley glacier moves _____ the sides. | faster than |
| When an ice block that was buried in sediment finally melts a depression called a ___ forms. | kettle |
| A(n) ______ is a steep-sided half-bowl shaped recess carved at the head of a mountain glacial valley. | cirque |
Do glaciers form on land?
Glaciers are masses of snow that has been compressed into giant sheets of ice. Most glaciers were formed during the last ice age. Glaciers are massive bodies of slowly moving ice. Glaciers form on land, and they are made up of fallen snow that gets compressed into ice over many centuries.
What is a lake formed within a cirque called quizlet?
The terms continental glacier and ice sheet are synonymous. A lake formed within a cirque is called a(n): a. drumlin.
Which of the following is true about how coasts are affected from the water slide?
Which of the following is true about how coasts are affected from the water side? Waves can erode, deposit, or simply transport sediment. All of these affect the appearance. All of these are correct.
What is the name of the structure built out in water and parallel to the shore it’s purpose to protect the beach from erosive power of waves?
What is the name of the structure built out in the water and parallel to the shore? It's purpose is to protect the beach from the erosive power of waves. Breakwater.
How are U-shaped valleys created?
Valley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. During periods when Earth's climate cools, glaciers form and begin to flow downslope. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers.
What landforms are created by alpine glaciers?
Alpine glaciers are slow-moving rivers of ice that flow from high mountains. Like the continental ones, they create lands by weathering and deposition. Examples of landforms by Alpine glaciers are arête, cirque, lateral moraines, hanging valley, terminal moraine, and fjords.
What is the bowl shaped hollow from which alpine glaciers originate Question 1 Options fjord tarn cirque arête?
A corrie. What is a cirque? A bowl-shaped depression carved out of a mountain by an alpine glacier.
How are U-shaped valleys formed by glaciers?
As glaciers flow through these valleys, they concentrate erosive action over the entire valley, widening its floor and over-steepening its walls. After the glacier retreats, it leaves behind a flat-bottomed, steep-walled U-shaped valley.
How were U-shaped valleys formed?
Valley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. During periods when Earth's climate cools, glaciers form and begin to flow downslope. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers.
What is the meaning of U-shaped valley?
Definition: U-shaped valleys form through glacial erosion. Glaciation develops in established v-shaped river valleys where the ice erodes the surrounding rocks to create a “U” shaped valley with a flat bottom and steep sides. Glacier movement is driven by gravity.
What a ridge at the edge of a glacier?
Arete. A jagged, narrow ridge that separates two adjacent glacier valleys or cirques.
What is a glacier ridge called?
ESKER. (geology) a long winding ridge of post glacial gravel and other sediment; deposited by meltwater from glaciers or ice sheets.
What do we call the valleys formed by smaller glaciers that join up with the main glacier?
U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation.
Which of the following is a knife edge ridge that forms from glaciers cutting on either side of a mountain?
By the same process, glaciers tend to narrow the bedrock divides between the upper reaches of neighbouring parallel valleys to jagged, knife-edge ridges known as arêtes. Arêtes also form between two cirques facing in opposite directions. The low spot, or saddle, in the arête between two cirques is called a col.
When a glacier retreats its ice contracts and flows back toward the glaciers point of origin?
Glaciers always retreat when they reach an elevation less than 5,000 feet. When a glacier retreats, its ice contracts and flows back toward the glacier's point of origin. Glaciers can grow smaller by melting, sublimation, or calving.
What is the name given to a long ridge of till that has been deposited in the middle of the valley floor?
This material forms one line of rocks and dirt in the middle of the new, bigger glacier. If a glacier melts, the medial moraine it leaves behind will be a long ridge of earth in the middle of a valley.
How were the great lakes formed?
About 20,000 years ago, the climate warmed and the ice sheet retreated. Water from the melting glacier filled the basins , forming the Great Lakes. Approximately 3,000 years ago, the Great Lakes reached their present shapes and sizes.
Where did glaciers come from?
Glaciers form on land, and they are made up of fallen snow that gets compressed into ice over many centuries. They move slowly downward from the pull of gravity. Most of the world's glaciers exist in the polar regions, in areas like Greenland, the Canadian Arctic, and Antarctica.