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Landforms created by glacial erosion - class-IX

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Long sinuous ridges found in former glacial sites in the direction of ice melted water streams are known as ________.

  1. Eskers

  2. Fjords

  3. Erratics

  4. Drumlins


Correct Option: A
Explanation:

Long sinous ridges found in former glacial sites in the direction of ice melted water strems are known as Eskers.

An esker, eskar, eschar, or os, sometimes called an asar, osar, or serpent kame, is a long, winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions of Europe and North America.

Northern most part in India is ____________.

  1. Gangotri glacier

  2. Siachen glacier

  3. Baltoro glacier

  4. Nubra glacier


Correct Option: B
Explanation:

Siachen Glacier lies in Northern Ladakh in the Karakorams, a mountain range originating from the Pamirs. The total area of Siachen Glacier is approximately 78 sq-km. 

Drowned glaciated valleys in high latitude regions are known as _______.

  1. Fjords

  2. Ocean ridges

  3. Sub-marine canyons

  4. Glaciated vaIleys


Correct Option: A
Explanation:

Drowned glaciated valleys in high latitude regions are known as Fjords.
Fjords are found in locations where current or past glaciation extended below current sea level. A fjord is formed when a glacier retreats, after carving its typical U-shaped valley, and the sea fills the resulting valley floor.

Eskers and Drumlins are features formed by ________.

  1. running water

  2. underground water

  3. the action of wind

  4. glacial action


Correct Option: D

Choose or find the odd word: Mountain, Valley, Glacier, Coast, Ridge :

  1. Mountain

  2. Valley

  3. Glacier

  4. Coast

  5. Ridge


Correct Option: C

Baltora glacier is located in

  1. Pamir plateau

  2. Shivalik

  3. Karakoram ranges

  4. Alps


Correct Option: C
Explanation:

The Baltoro Glacier, at 63 km in length, is one of the longest glaciers outside the polar regions. It is located in the Gilgit-Baltistan region of Pakistan-administered Kashmir, and runs through part of the Karakoram mountain range.

Drowned glaciated valleys in high latitude regions are known as _______.

  1. Fiords

  2. Ocean ridges

  3. Sub-marine canyons

  4. Glaciated valleys


Correct Option: A

Hanging valleys are formed due to the action of ______.

  1. river

  2. glacier

  3. waves of the ocean

  4. volcanic eruption


Correct Option: B

The Ganges originates from the _______  Glacier in Uttarakhand.

  1. Siachen

  2. Nubra

  3. Rimo

  4. Gangotri


Correct Option: D
Explanation:

Gangotri Glacier is located in Uttarkashi District, Uttarakhand, India in a region bordering China. This glacier, one of the primary sources of the Ganges, is one of the largest in the Himalayas with an estimated volume of over 27 cubic kilometers. Around the glacier are the peaks of the Gangotri Group, including several peaks notable for extremely challenging climbing routes, such as Shivling, Thalay Sagar, Meru, and Bhagirathi III. It flows roughly northwest, originating in a cirque below Chaukhamba, the highest peak of the group.

What causes the 'U' shaped valley?

  1. River

  2. Rain

  3. Sea waves

  4. Glacier


Correct Option: D
Explanation:

U-shaped valley is the landform curved by the erosional work of glacier. U-shaped valley has steep valley walls with concave slope and broad and flat valley floor. The U-shaped valley is found in the cross-section of a glacial valley or glacial troughs of mountain glaciers.

The important depositional landform produced by glaciers is __________.

  1. Flood plants

  2. Moraines

  3. Barchans

  4. Inselberg


Correct Option: B
Explanation:

When the glaciers melt or recede they deposit the rock materials brought by them in heaps of various shapes and sizes. These are known as moraines. Moraine is a ridge-like depositional feature of a glacier. They are long but narrow ridges with height more than 30m.

A large persistent body of dense ice that is constantly moving under its own weight is called as ____________.

  1. Snow Mountain

  2. Ice berg

  3. Fold Mountain

  4. Glacier


Correct Option: D
Explanation:

The moving ice mass downslope under the impact of gravity is called glacier. About 10 per cent of the earth's surface is now covered by glacier. Glacier are formed due to accumulation of ice above snow-line under extreme cold climate.

Siachen glacier is a _______ type of glacier.

  1. Valley

  2. Piedmont

  3. Static

  4. None of these


Correct Option: A
Explanation:

Siachen glacier is a valley type of glacier. The body of ice moving downslope under the impact of gravity through the valley bordered by rock valley walls in the mountain is called mountain glacier or valley glacier.

Which of the following are not water-laid deposits associated with glaciers?

  1. Kames

  2. Moraines

  3. Eskers

  4. Varves


Correct Option: B
Explanation:

Moraines are accumulations of dirt and rocks that have fallen onto the glacier surface or have been pushed along by the glacier as it moves. The dirt and rocks composing moraines can range in size from powdery silt to large rocks and boulders.

Which is not a type of moraine?

  1. Ground moraine.

  2. Lateral moraine.

  3. Crater moraine.

  4. All are the types of moraine


Correct Option: C
Explanation:

A mass of rocks and other sediments carried down and deposited by a glacier, typically as ridges at its edge or extremity is called a morain.

Different types of moraine:

  • Terminal moraines are found at the terminus or the furthest (end) point reached by a glacier.
  • Lateral moraines are found deposited along the sides of the glacier.
  • Medial moraines are found at the junction between two glaciers.
  • Ground moraines are disorganized piles of rocks of various shapes, sizes and of differing rock types.

Alpine glacier is also known as

  1. Piedmont glacier

  2. Valley glacier

  3. Both (a) and (b)

  4. None of these


Correct Option: B
Explanation:

Alpine glaciers, also known as mountain glaciers or cirque glaciers, form on the crests and slopes of mountains. An alpine glacier that fills a valley is sometimes called a valley glacier. 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. Several cirque glaciers can join together to form a single valley glacier.

Choose or find the odd word: Beaches, Lagoons, Bars, Moraines

  1. Beaches

  2. Lagoons

  3. Bars

  4. Moraines


Correct Option: D
Explanation:

Moraines are odd among the combination. As moraines are the ridge-like depositional feature of a glacier. On the other hand, beaches, lagoons, and bars are the landforms of coastal regions. 

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