Multiple choice general knowledge

90% of all volcanic activity occurs where?

  1. San Andreas Fault, CA

  2. Honolulu, HI

  3. on the coastlines

  4. in the oceans
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Approximately 90% of all volcanic activity occurs along mid-ocean ridges in the oceans. These underwater mountain ranges are where tectonic plates pull apart, creating new crust through seafloor spreading. Most volcanic eruptions happen underwater, unseen by humans.

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