Outline sources of energy in hot desert environments. - AQA - A-Level Geography - Question 2 - 2019 - Paper 1
Question 2
Outline sources of energy in hot desert environments.
Worked Solution & Example Answer:Outline sources of energy in hot desert environments. - AQA - A-Level Geography - Question 2 - 2019 - Paper 1
Step 1
The sun is the ultimate source of energy
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Answer
The sun acts as the primary source of energy for nearly all life in hot desert environments. Its radiation heats the surface, creating a significant temperature gradient between day and night.
Step 2
Insulation and reflection
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Answer
Insulation refers to the process of heat retention from the sun, while reflection causes some of this energy to bounce off surfaces. In deserts, the high albedo of sandy and rocky surfaces contributes to energy dynamics.
Step 3
Air pressure variations
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Answer
Variations in air pressure can affect weather patterns, with low pressure allowing for heat to escape and high pressure often creating drought conditions. This influences temperature and moisture availability.
Step 4
Convection currents and winds
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The movement of air, driven by convection currents, can transport heat across the desert landscape. Winds can also act as a source of energy, influencing erosion and weathering processes.
