4. Complete the facts. Write one word in each gap. 1) Volcanoes can be under the earth or under the sea. 2) ___ volcanoes can erupt again. 3) When a volcano erupts, you can see ___ from far away. 4) When a volcano erupts, ___ can destroy whole towns. 5) The last time Mount ___ erupted was in 1944. 6) Surtsey is an ___ that was formed by a submarine volcano. 7) If a supervolcano erupted, our ___ would change. 8) ___ volcanoes are the only ones that are not dangerous.

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