About this document
Understanding Volcanoes and Eruptions by Yumi Kazumi is a document available to read on EtoBox.
A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. There are more than 500 active volcanoes in the world, more than half of which are part of the Ring of Fire, a region encircling the Pacific Ocean.
- Author
- Yumi Kazumi
- Language
- EN