Consider the following statements : 1. Many urban and suburban areas experience a higher temperature than surrounding rural areas known as urban heat islands. 2. The reduction in urban green cover and the increase of built-up hard surface is the only cause of urban heat island. Which of the statements given above is/are correct?
1 only
Let's analyze the given statements regarding the concept of urban heat islands:
- Statement 1: "Many urban and suburban areas experience a higher temperature than surrounding rural areas known as urban heat islands."
- This statement is correct. An urban heat island (UHI) is a metropolitan area with significantly higher temperatures than its surrounding rural areas. This phenomenon occurs due to factors such as concrete surfaces, buildings, and human activities that retain heat.
- Statement 2: "The reduction in urban green cover and the increase of built-up hard surface is the only cause of urban heat island."
- This statement is incorrect. While reduction in green cover and an increase in hard surfaces are significant contributors, they are not the only causes. Other factors include heat generated by vehicle emissions, air conditioning systems, and industrial activities. The lack of wind flow due to tall buildings can also contribute to the UHI effect.
Thus, only Statement 1 is correct. Consequently, the correct answer is "1 only".
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