Challenger Logo

Challenger App

Get it on Google PlayGet it on App Store
Challenger App

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
Get App

Identify the correct statements regarding the climatic conditions in desert environments.

  1. Extremely high temperatures, exceeding 50°C, have been recorded in specific desert locations like Death Valley.
  2. Low diurnal and annual temperature ranges are a common feature of desert climates.
  3. Hot, dry winds like the sirocco can exacerbate desert conditions by moving sand.
  4. High humidity levels are typical in most desert regions.

    ANone of these

    B1, 3

    C1 only

    D3 only

    Answer:

    B. 1, 3

    Read Explanation:

    CLIMATE

    • Hot deserts are generally warm throughout the year. Mean annual temperatures are above 20°C.

    • They are extremely hot in summer, with day time temperatures well in excess of 40°C.

    • Places such as Jacobabad (Pakistan), Death Valley (California, USA) and Azizia (Libya) have recorded temperatures higher than 50°C.

    • The clear skies and low humidity also allow for high diurnal and annual ranges of temperature.

    Related Questions:

    What are the classifications of desertification based on productivity reduction?

    1. A reduction in productivity between 10% and 25% is considered severe desertification.
    2. Desertification is classified as moderate if productivity reduction is between 10% and 25%.
    3. A productivity reduction exceeding 50% is termed very severe desertification.
    4. Severe desertification occurs when productivity decreases by more than 50%.

      Which of the following statements about the size and scale of ecosystems is correct?

      1. Ecosystems always maintain a fixed, predictable size.
      2. The scale of an ecosystem can range from extremely large to very small.
      3. A tropical rainforest is an example of a small-scale ecosystem.
        What percentage of photosynthetically active radiation (PAR) is typically used by autotrophs for primary production (photosynthesis)?
        Estuaries are characterized by unique ecological features and:

        What are the defining characteristics of desert ecosystems?

        1. Annual precipitation exceeding 500 mm is a defining characteristic.
        2. Evaporation rates are considerably lower than precipitation levels.
        3. The defining feature is that evaporation surpasses precipitation.
        4. A common threshold for desert classification is less than 250 mm of annual precipitation.