Cities create urban heat islands because concrete, asphalt and buildings absorb and retain heat. Lack of greenery prevents cooling. This makes urban areas significantly warmer than surrounding rural regions, especially at night. Pollution and energy use also contribute to this warming effect.
Class 7 Social Science Textbook Chapter 3 Climates of India Question Answer
Class 7 Social Science Chapter 3 Climates of India Solutions
Urban heat islands form when cities, filled with buildings, roads and pavements, absorb and store heat during the day and release it slowly at night. This raises the temperature in urban areas compared to nearby rural zones. The lack of vegetation, widespread use of air conditioning and heat emitted from vehicles and industries worsen the effect. Urban areas also trap pollution, which adds to the warming. This localized climate change impacts health, energy use and environmental quality in cities.
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