When tectonic plates meet underwater.
They crash into eachother and the magma underneath comes out
and an underwater volcano starts.
their is volcanoes and underwater islands
under water
Yes.
volcanoes are mountthat explode lava
yes
There are more under water than on land.
1230900000
yes. some types of basalt is found of volcanoes.
The phrase "explode slowly" is an oxymoron. Composite volcanoes, regardless of whether they are island volcanoes or mainland volcanoes, will produce both explosive and non-explosive eruptions.
Um...they explode and kill people...
no they dont occur
Yes there are such things as volcanoes in denmark because they are buried right under neath the ocean waves and the waves could possibly wake the volcanoe up and it could explode into anything that you dont want it to be. This could be the awesomeast day of someone's life that likes volcanoes. they would love to see a volcanoe explode in mid air without someone to hold their hand with.