Question

Heat islands are formed by

• A. Water pollution
• B. Air pollution
• C. Land pollution
• D. All of the above

Answer 1

Answer: (B)

Air pollution

The heat island is a phenomenon where heat can no longer escape. The high temperature in urban areas as compared to rural areas can be called heat island effect. With the loss of vegetation and land surface in urban areas, heat gets trapped between buildings and dense areas which cause a warming effect. The air pollution due to greenhouse gases is responsible for this. Bigger cities have large heat island effects, the waste heat from energy use, seasonal changes, local weather also contribute to heat islands.

Hence, the correct answer is 'Air pollution'.