How often do volcanoes erupt

Different kinds of volcanoes? Volcanoes do not all look alike. Their shape is based on what types of material they erupt. There are three main kinds or shapes of volcanoes.
    Every year about sixty volcanoes erupt but most of the activity is pretty weak. Really big eruptions don’t happen that much luckily. Some haven’t erupted in the last thousand years. Some only erupt one time and some erupt constantly.
Volcanoe

Home | How Volcanoes Form | Why are they Called Volcanoes? | Why do they Erupt" | How Often do they Erupt?