A volcano is an opening, or rupture, in a planet's surface (crust), which allows hot: Magma, ash, and gases to escape from below the surface.

Well, geology is the study of the Earth and it's history. By learning more about the Earth we understand it better and we also learn of the dangers and invent good warning systems and monitor these dangers. I guess it takes someone, like myself, to show appreciation for this science to understand why we do. … Read more

Garnet is metamorphic, it is used mostly as jewelery. Slate, used for building or decorations, chalk boards, and the tables in science class for lab are usually made of slate. There are many more.

Usually located near fault boundaries.  Convergent subduction zones that is where most of our land volcanoes are located (and the most dangerous).

Divergent plate boundary is where fissure, sea-mount, and shield volcanoes occur.  There are some cases where there are hot-spots on Earth where volcanoes are randomly located, eg. Hawaii.  We believe it is … Read more