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Chapter 6: Problem 106

The average temperature in deserts is high during the day but quite cool at night, whereas that in regions along the coastline is more moderate. Explain.

Short Answer

Expert verified
The difference in climate between deserts and coastal regions is due to how they absorb and radiate heat. Deserts, lacking in vegetation and water bodies, absorb a lot of heat during the day and lose it quickly at night resulting in a high day and cool night temperature. Coastal regions, on the other hand, are moderated by the nearby water bodies which absorb and lose heat slower, resulting in moderate and stable temperatures.

Step by step solution

01

Understanding the nature of Deserts

Deserts have a less dense vegetative cover and very limited area covered by water. This allows more sunlight to hit the desert surface and heat gets quickly absorbed, raising the temperature during the daytime.
02

Temperature variation in deserts

After sunset, the heat absorbed by the desert surface radiates back into the atmosphere faster due to lack of water bodies (which tend to hold heat longer), leading to cooler temperatures at night.
03

Understanding Coastal climate

Coastal areas, which are near the large bodies of water (ocean, sea or a big lake), experience moderate temperature. This is because water bodies absorb and lose heat slower than land.
04

Temperature in Coastal regions

During daytime, water bodies absorb some of the sun's heat, reducing the heat reached to the land and thus controlling the maximum temperature. At night, the stored heat in the water body is slowly released into the surrounding, moderating the minimum temperature.

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Most popular questions from this chapter

Consider two metals A and B, each having a mass of \(100 \mathrm{~g}\) and an initial temperature of \(20^{\circ} \mathrm{C}\). The specific heat of \(A\) is larger than that of \(B\). Under the same heating conditions, which metal would take longer to reach a temperature of \(21^{\circ} \mathrm{C} ?\)

Describe two exothermic processes and two endothermic processes.

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