Consider the following statements regarding Glaciers: 1. They are rivers of ice. 2. They do not erode the landscape. 3. They deposit material such as sand and silt to form glacial moraines. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation Glaciers are large masses of moving ice that act as powerful geomorphic agents. They modify the land surface significantly through the processes of erosion, transportation, and deposition. Statement-wise Analysis - Statement 1 is Correct: Glaciers are essentially "rivers of ice." They are formed by the accumulation and compaction of snow and flow slowly over land under the influence of gravity and their own weight. - Statement 2 is Incorrect: Glaciers are active agents of erosion. As they move, they erode the landscape by bulldozing soil and stones to expose the solid rock below. They modify the terrain through processes such as plucking (lifting rocks) and abrasion (scouring the bedrock). - Statement 3 is Correct: Glaciers transport various materials, including big rocks, sand, and silt. When the glacier melts or retreats, these materials are deposited. These deposits form specific landforms known as glacial moraines. Key Takeaway: Glaciers are dynamic agents that not only transport ice but also actively erode the landscape and deposit sediments (till) to form features like moraines.

Consider the following statements regarding Glaciers: 1.… - NCERT Class 7 Geography MCQ

NCERT Class 7 Geography — Chapter 2: Our Changing Earth

mcqeasy

Consider the following statements regarding Glaciers:

They are rivers of ice.
They do not erode the landscape.
They deposit material such as sand and silt to form glacial moraines.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT The Earth Our Habitat · Page 16

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

Glaciers are large masses of moving ice that act as powerful geomorphic agents. They modify the land surface significantly through the processes of erosion, transportation, and deposition.

Statement-wise Analysis

Statement 1 is Correct: Glaciers are essentially "rivers of ice." They are formed by the accumulation and compaction of snow and flow slowly over land under the influence of gravity and their own weight.
Statement 2 is Incorrect: Glaciers are active agents of erosion. As they move, they erode the landscape by bulldozing soil and stones to expose the solid rock below. They modify the terrain through processes such as plucking (lifting rocks) and abrasion (scouring the bedrock).
Statement 3 is Correct: Glaciers transport various materials, including big rocks, sand, and silt. When the glacier melts or retreats, these materials are deposited. These deposits form specific landforms known as glacial moraines.

Key Takeaway: Glaciers are dynamic agents that not only transport ice but also actively erode the landscape and deposit sediments (till) to form features like moraines.

Your note

More from Chapter 2: Our Changing Earth

Consider the following pairs: 1. Angel Falls : South America 2. Niagara Falls : Africa 3. Victoria Falls : North America Which of the pairs given above is/are correctly matched?

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As the river enters the plain, it twists and turns forming large bends known as:

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What causes the movement of Lithospheric plates?

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With reference to Earthquakes, consider the following statements: 1. The place in the crust where the movement starts is called the focus. 2. The place on the surface above the focus is called the focus. 3. Vibrations travel outwards from the epicentre as waves. Which of the statements given above is/are correct?

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The material carried by the glacier such as rocks, sand, and silt gets deposited to form:

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