Multiple choice

Consider the following facts:

  1. Volcanoes are capable of cooling the atmosphere.
  2. Barren Island is the only confirmed active volcano in South Asia.

Which of the above is/are true?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Large eruptions can affect temperature as ash and droplets of sulphuric acid obscure the sun and cool the earth's lower atmosphere or troposphere. However, they also absorb heat radiated up from the earth, thereby warming the stratosphere. Historically, so called volcanic winters have caused catastrophic famines. Barren Island is located in the Andaman Sea, one of the most easterly of the Andaman Islands. It is the only confirmed active volcano in South Asia.

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