Multiple choice general knowledge science & technology

Which of the following is not used to classify volcanoes?

  1. Dormant

  2. Effective

  3. Extinct

  4. Active
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Volcanoes are classified into three main types: Active (currently erupting or likely to erupt), Dormant (currently inactive but may erupt again), and Extinct (unlikely to ever erupt again). 'Effective' is not a scientific classification term for volcanoes - it appears to be a distractor word.

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