Question

How do deep ocean volcanoes form islands?

If you can please explain it in 5 steps. my teacher wants it in 5 steps. thanks!

Answer 1

1. Most volcanic islands originate from passive lava flows on the seafloor.

2. These passive flows harden into rock and build up the height of the underwater mountain over millions of years.

3. In addition to magma supply, plate tectonics play a large part in determining which submarine volcanoes will eventually form islands.

4. This volcano, West Mata, erupted in 2009 about 1,219 meters (4,000 feet) beneath the surface of the Pacific Ocean, between Fiji, Tonga, and Samoa.

5. The orange glow of magma is visible beneath the plume of volcanic gases (mostly yellowish sulfur) emitted by West Mata.