Outline the role of wind in the process of transport in hot deserts - AQA - A-Level Geography - Question 2 - 2021 - Paper 1
Question 2
Outline the role of wind in the process of transport in hot deserts.
[4 marks]
Worked Solution & Example Answer:Outline the role of wind in the process of transport in hot deserts - AQA - A-Level Geography - Question 2 - 2021 - Paper 1
Step 1
Sediment Movement through Traction or Creep
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Answer
Wind plays a crucial role in moving sediments across the desert floor. This process is known as traction or creep. During this, particles are pushed along the ground by the force of the wind, especially when winds are strong enough to overcome the resting weight of the sediments.
Step 2
Bounce Movement of Smaller Sediments
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Answer
In addition to traction, the wind is also responsible for the bouncing movement of smaller sediment particles. This occurs primarily when winds are stronger, causing lighter particles to lift off the surface and travel short distances in the air before falling back down.
Step 3
Suspended Particles and Dust Storms
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In extreme conditions such as dust storms, the winds can suspend even smaller particles in the atmosphere. These airborne sediments can be transported over vast distances, contributing to the erosion and deposition patterns in desert landscapes.
Step 4
Erosion Effects of Wind Transport
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The transport of sediments by wind is significant for erosion processes in deserts. As sediments are moved, they can erode rock surfaces and other formations, leading to the creation of unique landforms typical of desert environments.
