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Consider the following statements regarding Urban heat island.
- An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day.
- It is a local and temporary phenomenon.
- Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.
Which of the above statements is/are correct?
- a)1 only
- b)1, 2
- c)1, 3
- d)2, 3
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements regarding Urban heat island. An urba...
- An urban heat island is a local and temporary phenomenon experienced when certain pockets within a city experience higher heat load than surrounding or neighbouring areas on the same day. The temperature variation can range between 3 to 5 degrees Celsius.
- Rural areas have relatively larger green cover in the form of plantations, farmlands, forests and trees as compared to urban spaces. This green cover plays a major role in regulating heat in its surroundings.
- On the contrary, urban areas lack sufficient green cover or gardens and are often developed with highrise buildings, roads, parking spaces, pavements and transit routes for public transport. As a result, heat regulation is either completely absent or man-made.
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Community Answer
Consider the following statements regarding Urban heat island. An urba...
Explanation:
Statement 1: An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day.
This statement is correct. Urban heat island refers to the phenomenon where urban areas experience higher temperatures compared to the surrounding rural areas. This is primarily caused by the high concentration of buildings, concrete, asphalt, and other heat-absorbing materials in cities. These materials absorb and retain heat, leading to increased temperatures in cities.
Statement 2: It is a local and temporary phenomenon.
This statement is incorrect. Urban heat island is not a temporary phenomenon. It is a long-term and persistent effect that occurs due to urbanization and the modification of the natural environment. The urban heat island effect can be observed consistently over time and is influenced by various factors such as land use, urban morphology, and climate conditions.
Statement 3: Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.
This statement is correct. High-rise buildings can help in reducing the urban heat island effect. The tall structures create a vertical profile in the urban area, allowing for increased airflow and ventilation. This helps to dissipate heat and reduce the overall temperature in the surroundings. Additionally, high-rise buildings can provide shade to the streets and open spaces, reducing direct exposure to sunlight and lowering surface temperatures.
Conclusion:
Therefore, the correct statements are:
1. An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day.
2. Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.
Hence, the correct answer is option 'B' (1 and 2).
Statement 1: An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day.
This statement is correct. Urban heat island refers to the phenomenon where urban areas experience higher temperatures compared to the surrounding rural areas. This is primarily caused by the high concentration of buildings, concrete, asphalt, and other heat-absorbing materials in cities. These materials absorb and retain heat, leading to increased temperatures in cities.
Statement 2: It is a local and temporary phenomenon.
This statement is incorrect. Urban heat island is not a temporary phenomenon. It is a long-term and persistent effect that occurs due to urbanization and the modification of the natural environment. The urban heat island effect can be observed consistently over time and is influenced by various factors such as land use, urban morphology, and climate conditions.
Statement 3: Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.
This statement is correct. High-rise buildings can help in reducing the urban heat island effect. The tall structures create a vertical profile in the urban area, allowing for increased airflow and ventilation. This helps to dissipate heat and reduce the overall temperature in the surroundings. Additionally, high-rise buildings can provide shade to the streets and open spaces, reducing direct exposure to sunlight and lowering surface temperatures.
Conclusion:
Therefore, the correct statements are:
1. An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day.
2. Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.
Hence, the correct answer is option 'B' (1 and 2).
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Consider the following statements regarding Urban heat island. An urban heat island is experienced when certain areas within a city experience higher heat load than surrounding areas on the same day. It is a local and temporary phenomenon. Construction of high-rise buildings rather than two storey building helps in reducing the Urban heat island.Which of the above statements is/are correct?a)1 onlyb)1, 2c)1, 3d)2, 3Correct answer is option 'B'. Can you explain this answer?
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