Nature. with plate tectonics and stuff
Ash and Gas make composite volcanoes erupt i believe
the volcano erupts from the earth. when it hits 200 degrees celsius, it will erupt..and volcanoes can erupt ice at -300 degrees celsius
the type of lava
Volcanoes are only destructive to people and property when they erupt. Volcanoes can lie dormant for decades before they erupt. The Hawaiian Islands were all formed from eruptions of volcanoes in the ocean.
No. Volcanoes erupt.
Yes, volcanoes can erupt in the ocean. If this were not true the Hawaiian islands as well as many other vacation island chains would simply not exist. It is also estimated by National Geographic in "Volcanoes: Natures Inferno" that the oceans conceal some 80% of volcanic activity worldwide.
About 60 volcanoes erupt each year.
An unlimited amount of volcanoes can erupt at once
Volcanoes can erupt at any time of year.
Volcanoes can erupt in any climate. Climate does not affect a volcano's ability to erupt.
Active volcanoes erupt. Dormant volcanoes are quiet - but may erupt again some day. Extinct volcanoes have "closed up shop" for good, and will never erupt again.
Yes. All of the Hawaiian islands are volcanic. Most of the volcanoes, however, are long extinct. Only the volcanoes at the eastern end of the chain still erupt.