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Cirque/ Corrie: A steep-walled, bowl-shaped depression formed by the headward erosion of a glacier.
Glacial Trough: A long, narrow valley carved by a glacier.
Hanging Valley: A valley that is higher than the valley it joins, formed when a glacier erodes the valley floor more deeply than the valley walls.
Arete: A sharp ridge formed by the intersection of two cirques.
Horn: A pyramidal peak formed by the intersection of three or more cirques.
D. Fjord: A long, narrow, deep inlet of the sea, typically formed by a glacier.
A cirque, also known as a corrie, is a steep-walled, bowl-shaped depression formed by the headward erosion of a glacier. Cirques are typically found in mountainous areas, and they are often the source of glaciers. The walls of a cirque are formed by the erosion of the surrounding rock by the glacier. The glacier moves slowly down the valley, scraping away at the rock as it goes. This erosion eventually creates a bowl-shaped depression. The floor of a cirque is typically filled with moraine, which is a mixture of rock and SoilSoil that has been deposited by the glacier. Cirques are important features in the landscape, as they provide habitat for a variety of plants and animals. They are also popular destinations for hikers and climbers.
A glacial trough is a long, narrow valley carved by a glacier. Glacial troughs are typically U-shaped in cross-section, with steep sides and a flat floor. They are found in mountainous areas, where glaciers have eroded the landscape over time. Glacial troughs are often the source of rivers, and they can also be used for transportation.
A hanging valley is a valley that is higher than the valley it joins, formed when a glacier erodes the valley floor more deeply than the valley walls. Hanging valleys are typically found in mountainous areas, and they are often the source of waterfalls. The waterfall is formed when the water from the hanging valley cascades down the steep slope to the lower valley.
An arête is a sharp ridge formed by the intersection of two cirques. Arête is a French word that means “ridge”. Arête are typically found in mountainous areas, and they are often the result of glacial erosion. The glaciers erode the sides of the mountains, leaving behind a sharp ridge. Arête are important features in the landscape, as they provide habitat for a variety of plants and animals. They are also popular destinations for hikers and climbers.
A horn is a pyramidal peak formed by the intersection of three or more cirques. Horn is a German word that means “horn”. Horn are typically found in mountainous areas, and they are often the result of glacial erosion. The glaciers erode the sides of the mountains, leaving behind a sharp peak. Horn are important features in the landscape, as they provide habitat for a variety of plants and animals. They are also popular destinations for hikers and climbers.
A fjord is a long, narrow, deep inlet of the sea, typically formed by a glacier. Fjords are found in many parts of the world, but they are most common in Norway, Greenland, and Iceland. Fjords are formed when a glacier retreats, leaving behind a deep valley that is filled with seawater. The steep sides of the fjords are often eroded by waves, creating a dramatic landscape. Fjords are important features in the landscape, as they provide habitat for a variety of plants and animals. They are also popular destinations for tourists.
Cirque/ Corrie
- What is a cirque?
A cirque, also known as a corrie, is a steep-walled, bowl-shaped depression formed by the headward erosion of a glacier. - How are cirques formed?
Cirques are formed when a glacier erodes the valley floor more deeply than the valley walls. This causes the valley to become wider and the sides of the valley to become steeper. Eventually, the glacier will erode the valley floor so deeply that it forms a bowl-shaped depression. - What are some examples of cirques?
Some examples of cirques include the cirques found in the Alps, the Himalayas, and the Rocky Mountains.
Glacial Trough
- What is a glacial trough?
A glacial trough is a long, narrow valley carved by a glacier. - How are glacial troughs formed?
Glacial troughs are formed when a glacier erodes the valley floor more deeply than the valley walls. This causes the valley to become wider and the sides of the valley to become steeper. Eventually, the glacier will erode the valley floor so deeply that it forms a long, narrow valley. - What are some examples of glacial troughs?
Some examples of glacial troughs include the Grand Canyon, the Yosemite Valley, and the U-shaped valleys found in the Alps.
Hanging Valley
- What is a hanging valley?
A hanging valley is a valley that is higher than the valley it joins, formed when a glacier erodes the valley floor more deeply than the valley walls. - How are hanging valleys formed?
Hanging valleys are formed when a glacier erodes the valley floor more deeply than the valley walls. This causes the valley to become wider and the sides of the valley to become steeper. Eventually, the glacier will erode the valley floor so deeply that it forms a valley that is higher than the valley it joins. - What are some examples of hanging valleys?
Some examples of hanging valleys include the hanging valleys found in the Alps, the Himalayas, and the Rocky Mountains.
Arete
- What is an arete?
An arete is a sharp ridge formed by the intersection of two cirques. - How are aretes formed?
Arete are formed when two cirques erode the valley walls until they meet. This causes the valley to become narrower and the sides of the valley to become steeper. Eventually, the two cirques will meet and form a sharp ridge. - What are some examples of aretes?
Some examples of aretes include the aretes found in the Alps, the Himalayas, and the Rocky Mountains.
Horn
- What is a horn?
A horn is a pyramidal peak formed by the intersection of three or more cirques. - How are horns formed?
Horns are formed when three or more cirques erode the valley walls until they meet. This causes the valley to become narrower and the sides of the valley to become steeper. Eventually, the three cirques will meet and form a pyramidal peak. - What are some examples of horns?
Some examples of horns include the Matterhorn, the Jungfrau, and the Eiger.
D. Fjord
- What is a fjord?
A fjord is a long, narrow, deep inlet of the sea, typically formed by a glacier. - How are fjords formed?
Fjords are formed when a glacier erodes the valley floor more deeply than the valley walls. This causes the valley to become wider and the sides of the valley to become steeper. Eventually, the glacier will erode the valley floor so deeply that it forms a long, narrow inlet of the sea. - What are some examples of fjords?
Some examples of fjords include the Sognefjord, the Hardangerfjord, and the Geirangerfjord. Which of the following is a steep-walled, bowl-shaped depression formed by the headward erosion of a glacier?
(A) Cirque/Corrie
(B) Glacial Trough
(CC) Hanging Valley
(D) Arete
(E) HornWhich of the following is a long, narrow valley carved by a glacier?
(A) Cirque/Corrie
(B) Glacial Trough
(C) Hanging Valley
(D) Arete
(E) HornWhich of the following is a valley that is higher than the valley it joins, formed when a glacier erodes the valley floor more deeply than the valley walls?
(A) Cirque/Corrie
(B) Glacial Trough
(C) Hanging Valley
(D) Arete
(E) HornWhich of the following is a sharp ridge formed by the intersection of two cirques?
(A) Cirque/Corrie
(B) Glacial Trough
(C) Hanging Valley
(D) Arete
(E) HornWhich of the following is a pyramidal peak formed by the intersection of three or more cirques?
(A) Cirque/Corrie
(B) Glacial Trough
(C) Hanging Valley
(D) Arete
(E) Horn
The answers are:
1. (A)
2. (B)
3. (C)
4. (D)
5. (E)