Causes of Droughts and El Niño Phenomenon

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Questions and Answers

What is a meteorological cause of droughts?

  • Short-term precipitation surplus
  • Enhanced ENSO cycles
  • Anticyclones preventing cloud formation (correct)
  • Stable ITCZ

How is El Niño related to drought conditions in South America?

  • It causes low pressure above Australia
  • It creates a high risk of flooding in South America
  • It leads to drought-like conditions in South America (correct)
  • It triggers intense rainfall in South America

What happened in southern Australia in 2006 as mentioned in the text?

  • River Murray overflowed its banks
  • High precipitation season recorded
  • No impact on food production
  • Lowest rainfall season since 1990 (correct)

How does human activity contribute to increased drought risks?

<p>Over-extraction of surface water resources (C)</p> Signup and view all the answers

What impact did the 2006 drought in southern Australia have on the Murray Darling Basin?

<p>Decreased food production (C)</p> Signup and view all the answers

How does deforestation contribute to land drying out?

<p>By reducing the land's ability to store water (A)</p> Signup and view all the answers

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