FAQs on GC Leong: Arid or Desert Landforms

Question 1

1. What are arid landforms?

Accepted Answer

Ans. Arid landforms are geographical features that are characteristic of dry and desert regions. They include features such as sand dunes, wadis, playas, and desert pavement. These landforms are formed due to the lack of water and high evaporation rates in arid regions.

Question 2

2. How are sand dunes formed in arid regions?

Accepted Answer

Ans. Sand dunes are formed in arid regions through a process called aeolian activity. When wind blows over loose sand, it picks up and transports the sand particles. As the wind slows down or encounters an obstacle, it deposits the sand particles, resulting in the formation of sand dunes.

Question 3

3. What are wadis and how are they formed?

Accepted Answer

Ans. Wadis are dry riverbeds or channels that are found in arid regions. They are formed through the intermittent flow of water during periods of heavy rainfall or flash floods. The water erodes and transports sediment, creating these distinctive landforms.

Question 4

4. What is desert pavement?

Accepted Answer

Ans. Desert pavement refers to a surface covered with closely packed rocks and pebbles, often found in arid regions. It is formed through a process called deflation, where wind removes fine particles such as sand and dust, leaving behind the larger rocks and pebbles on the surface.

Question 5

5. How do playas form in arid regions?

Accepted Answer

Ans. Playas are flat, dry lakebeds that are common in arid regions. They form when water accumulates in a depression, such as a basin or a hollow, during periods of heavy rainfall. As the water evaporates, it leaves behind mineral salts and sediments, creating the characteristic playa landform.

00:20	Desert Topography
01:43	Types of Desert
03:42	Mechanism of Arid Erosion
07:02	Erosional Landforms in Desert
11:19	Question 1
11:47	Depositional Landforms in Desert
More

00:20	Desert Topography
01:43	Types of Desert
03:42	Mechanism of Arid Erosion
07:02	Erosional Landforms in Desert
11:19	Question 1
11:47	Depositional Landforms in Desert
More

GC Leong Arid or Desert Landforms Video Lecture - Geography for UPSC CSE

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