they form by something
Yes, volcanoes can form underwater in locations such as mid-ocean ridges and subduction zones. When magma from the Earth's mantle rises to the surface through the crust underwater, it can create underwater volcanic mountains known as seamounts or even lead to the formation of new islands. These underwater volcanic regions play a significant role in the earth's geological processes.
composite volcanos
igneous rock
The two ways to write the plural form of "volcano" are "volcanoes" and "volcanos". The most common and accepted plural form is "volcanoes".
when to different plates push up to form a volcano
mostly on techtonic plates by volcanos
The plural form of volcano may be spelled, volcanos or volcanoes.The -es version, as with the plural, tornadoes, is more widely used.
Because of the plates
Some islands are formed by volcanoes, but most are not.
The plural possessive form of "volcanoes" is "volcanoes'".
Underwater eruptions cause tsunamis and cause lava to form and underwater ridge.
well when its form underwater eventually it will erupt causeing it to make land form around it :)