Reading: all about volcano, we talked about volcano. A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Some volcano are active, some are dormant or inactive. Some are on the land, some are under the sea.
We also Learnt the mount saint helens
The Hawaiian islands were formed by volcanic activity initiated at an undersea magma source called the Hawaii hotspot. It took millions of years to form the island of Hawaii.