Consider the following statements regarding the physical landscape of the Sahara Desert: 1. It consists solely of vast stretches of sand dunes. 2. It includes gravel plains and elevated plateaus with bare rocky surfaces. 3. Some rocky surfaces in the desert can be more than 2500m high. Which of the statements given above is/are correct?

The correct option is (c). Explanation The Sahara Desert, the largest hot desert in the world, possesses a varied physical landscape. Contrary to popular perception, it is not a uniform expanse of sand but includes a complex mix of arid landforms such as ergs (sand seas), regs (gravel plains), and hamadas (rocky plateaus). Statement-wise Analysis: - Statement 1 is Incorrect. The Sahara does not consist solely of sand dunes. While sand dunes (ergs) are a prominent feature, they cover only a portion of the desert. The landscape is vast and heterogeneous, containing other significant geological formations. - Statement 2 is Correct. A large proportion of the Sahara consists of gravel plains (regs) and elevated plateaus with bare rocky surfaces (hamadas). These surfaces are typically swept clear of sand by wind erosion, exposing the bedrock or gravel layers. - Statement 3 is Correct. The Sahara contains several mountain ranges and high-altitude plateaus. For example, the Tibesti Mountains in Chad and the Ahaggar Mountains in Algeria feature peaks that rise well above 2500 meters. The highest peak, Emi Koussi, reaches an elevation of 3,415 meters. Key Takeaway: The physical geography of the Sahara is defined by a combination of ergs (sand dunes), regs (gravel plains), and hamadas (rocky plateaus), alongside significant mountain ranges, rather than being exclusively covered by sand.

Consider the following statements regarding the physical… - NCERT Class 7 Geography MCQ

NCERT Class 7 Geography — Chapter 2: Life in the Deserts

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Consider the following statements regarding the physical landscape of the Sahara Desert:

It consists solely of vast stretches of sand dunes.
It includes gravel plains and elevated plateaus with bare rocky surfaces.
Some rocky surfaces in the desert can be more than 2500m high.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT The Earth Our Habitat · Page 1

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

The Sahara Desert, the largest hot desert in the world, possesses a varied physical landscape. Contrary to popular perception, it is not a uniform expanse of sand but includes a complex mix of arid landforms such as ergs (sand seas), regs (gravel plains), and hamadas (rocky plateaus).

Statement-wise Analysis:

Statement 1 is Incorrect. The Sahara does not consist solely of sand dunes. While sand dunes (ergs) are a prominent feature, they cover only a portion of the desert. The landscape is vast and heterogeneous, containing other significant geological formations.
Statement 2 is Correct. A large proportion of the Sahara consists of gravel plains (regs) and elevated plateaus with bare rocky surfaces (hamadas). These surfaces are typically swept clear of sand by wind erosion, exposing the bedrock or gravel layers.
Statement 3 is Correct. The Sahara contains several mountain ranges and high-altitude plateaus. For example, the Tibesti Mountains in Chad and the Ahaggar Mountains in Algeria feature peaks that rise well above 2500 meters. The highest peak, Emi Koussi, reaches an elevation of 3,415 meters.

Key Takeaway:
The physical geography of the Sahara is defined by a combination of ergs (sand dunes), regs (gravel plains), and hamadas (rocky plateaus), alongside significant mountain ranges, rather than being exclusively covered by sand.

Your note

More from Chapter 2: Life in the Deserts

The discovery of skeletons of which one of the following aquatic creatures in the Sahara Desert suggests a humid past?

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With reference to the people of the Sahara Desert, consider the following statements: 1. The Bedouins and Tuaregs are settled agricultural communities. 2. They rear livestock such as goats, sheep, camels, and horses. 3. They wear heavy robes as protection against dust storms and hot winds. Which of the statements given above is/are correct?

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With reference to the Sahara Desert, consider the following statements: 1. It covers a large part of North Africa. 2. It touches exactly three countries. 3. Its total area is more than double the area of India. Which of the statements given above is/are correct?

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Which of the following statements regarding the 'Tuaregs' is true? 1. They are traditionally nomadic tribes. 2. They are strictly prohibited from working in the oil and gas sector. 3. They act as guides to foreign tourists. Select the correct answer using the code given below:

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In the context of Ladakh, what is 'Shahtoosh'?

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