-Some volcanic eruptions are relatively quiet, with lava oozing out or spraying like a fountain. At other times, volcanoes can explode with enormous force, literally blowing their tops off
-Violent eruptions hurl tiny bits of rock and volcanic ash into the air in an enormous cloud. Eventually, that hot ash falls to Earth, where it can dramatically change the surrounding region. If thick enough, the ash can bury vegetation and even people and buildings. Sometimes ash mixes with steam to create a fast-moving mudslide, capable of burying everything in its path. After a violent eruption, the land around a volcano may collapse, creating a large crater, or hole.