As often as it wants. It all depends on how much pressure is building up underneath it.
Never.
Not too often XD :D C===3
Mount St. Helen does not erupt in any pattern. When it erupted in 1980, scientist had no idea that it was going to erupt because it did not follow a pattern and it did not have very many precursor.
they arupt 2 a year
8. June 1783
There is no reason to believe Yellowstone will erupt any time in the next century.
because smoke comes out of the volcano
A tree fell down and touched the volcano so the volcano started erupting.
the difference from a volcano to a mountain is that a vocano erups but a mountain doesnt.
Yes, they often erupt again.
Volcanoes have been erupting continuously, somewhere, since the very beginning of our Earth, millions of years before mankind appeared on the surface. Therefore, this question is unanswerable.
It depends, a volcano can erupt once and never erupt again. Or, a volcano can erupt multiple times a day.
Never.
Very varied. Some erupt every few decades, some are dormant for centuries.
As many as it wants. Some volcanoes erupt often, some infrequently
Mt.vesuvius does errupt often. hope this helped!
tomorrow