Understanding the Urban Heat Island Phenomenon
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Questions and Answers

What is the urban heat island phenomenon?

  • The phenomenon of cities being colder at night than in the countryside.
  • Heat absorbed by buildings and road surfaces during the day. (correct)
  • The reflective power of materials covering building surfaces.
  • The percentage gains in ground temperature due to white buildings.
  • How can cities utilize the albedo effect to combat high temperatures?

  • By promoting the use of high-reflecting paints on walls and roofs. (correct)
  • By encouraging the creation of gardens with trees for shade.
  • By abandoning asphalt and using porous surfaces for roads.
  • By implementing more sprinkler systems on pavements.
  • What role do green roofs play in helping cities adapt to climate change?

  • They prevent hot air from stagnating between buildings.
  • They provide shade and maintain correct levels of evapotranspiration. (correct)
  • They increase the ambient temperature through evaporation.
  • They facilitate the seepage of water into the soil.
  • How can painting roads and buildings white help in reducing ground temperatures?

    <p>By allowing gains of up to ten percent at ground level.</p> Signup and view all the answers

    What impact does putting the wind to work have on urban temperatures?

    <p>Helps in generating cool pockets through water evaporation.</p> Signup and view all the answers

    Why is it recommended to avoid asphalt in favor of porous surfaces?

    <p>To allow water to seep through into the soil.</p> Signup and view all the answers

    What is a key benefit of hosing down roads with sprinklers during hot weather?

    <p>To generate cool pockets through water evaporation.</p> Signup and view all the answers

    How does water evaporation contribute to lowering ambient temperatures?

    <p>By generating cool pockets that lower temperatures.</p> Signup and view all the answers

    What happens when hot air stagnates between buildings?

    <p>Increased urban heat island effect</p> Signup and view all the answers

    During a heatwave, the temperature difference between a city center and the countryside can reach up to ten degrees at night.

    <p>True</p> Signup and view all the answers

    The albedo effect helps in raising temperatures by up to three degrees by painting roads and buildings white.

    <p>False</p> Signup and view all the answers

    Encouraging the free flow of air between buildings can contribute to preventing hot air from stagnating.

    <p>True</p> Signup and view all the answers

    Green roofs are not effective in maintaining correct levels of evapotranspiration in urban settings.

    <p>False</p> Signup and view all the answers

    Porous surfaces like paved roads allow water to seep through into the soil, unlike asphalt.

    <p>True</p> Signup and view all the answers

    Fountains contribute to raising ambient temperatures due to water evaporation.

    <p>False</p> Signup and view all the answers

    Sprinkler systems integrated into pavements are not recommended for hosing down roads during hot weather.

    <p>False</p> Signup and view all the answers

    Cities can harness the reflecting power of materials on building surfaces to combat high temperatures.

    <p>True</p> Signup and view all the answers

    The urban heat island phenomenon occurs due to colder temperatures in city centers compared to the countryside at night.

    <p>False</p> Signup and view all the answers

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