Volcanos
There are more than 500 active volcanoes in the world most in the pacific oceans ring of fire.
Magma is liquid rock inside a volcano.
Mauna loa erupted 33 times.
In Hawaii Mauna Loa is the biggest volcano.
Mount Etna is the oldest volcano in the world.
the word volcano is named after the roman god Vulcan.
The smallest volcano is mount Tall in the Phillippines.