Explain how large water bodies prevent extreme temperature in areas around them.
Large water bodies like seas and oceans help moderate temperatures in nearby areas because water heats up and cools down more slowly than land.
During the day, when the sun shines, land gets heated faster than water. The air above the land becomes warm and rises, and cooler air from the sea moves towards the land (sea breeze), bringing relief from heat.
At night, the land cools down faster than water. The air above the sea remains warmer and rises, while cooler air from the land moves towards the sea (land breeze).
This continuous exchange of air through sea and land breezes prevents extreme temperature fluctuations in coastal areas. As a result, coastal regions experience moderate temperatures compared to inland areas, which have more extreme temperature variations.
Explanation
The chapter explains this phenomenon in section 7.2.1 'Land and Sea Breeze': 'As the land gets heated faster than water during the day, it causes warm air above the land to rise. This causes cooler air to move from the sea towards the land. This movement of cooler air from the sea to the land is called sea breeze... At night, the process reverses. In the absence of sunlight, land cools down faster than the water in the sea. As a result, the air above the sea is warmer and rises up. Cooler air from the land then moves towards the sea, creating a land breeze.'
Solution Steps
Water heats up and cools down more slowly than land, which helps moderate temperatures in nearby areas
During the day, land heats faster than water, causing warm air above land to rise and cooler sea air to move inland as sea breeze
At night, land cools faster than water, causing warmer air above the sea to rise and cooler land air to move towards the sea as land breeze
The continuous exchange of air through sea and land breezes prevents extreme temperature fluctuations
Coastal regions experience moderate temperatures compared to inland areas with more extreme variations