There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

Image caption, This is lava running from a shield volcano - a volcano formed where the tectonic plates move away from each other. Shield volcanoes on the other hand form at constructive tectonic ...

When a volcano erupts, it can spew ash high into the atmosphere—inserting aerosols right where clouds typically form. How ...