Well the earth rips apart the mantle and its called magma that layers on top. witch after years and years it becomes a island.
because they were formed under the sea so when they erupt the can form tsunamis
on islands because they form under water the rise up
their is volcanoes and underwater islands
under water
Well, there is no such thing as a floating island. Islands are formed from volcanoes under the water and form an Island.
Yes.
There are more under water than on land.
Well, volcanoes form in many places. but the main place where volcanoes form is along the border of plates. this happens when one plate goes under the other and starts forming into a volcano.
Volcanoes form from either techtonic plates crashing together or from hot spots under the earth
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Oceanic plates are much thinner than continental ones. Thus, their surface is closer to the upper mantle, which is where the magma in volcanoes comes from, and it is easier for lava to reach that distance up to form volcanoes.
yes. some types of basalt is found of volcanoes.