PBS
Pbs Learning Media: Anatomy of a Volcano
In this interactive activity from NOVA Online, explore the main features of the Nyiragongo volcano, located in the Democratic Republic of Congo, and learn what risks it poses to the 500,000 people who live in its shadow.
US Geological Survey
Cvo: Magma, Lava, and Lava Flows
Site delves into magma, lava and lava flows. Provides numerous links for additional references.
Australian Museum
Australian Museum: Structure of Volcanoes
A comprehensive site covering everything from volcanic structures to pyroclastic materials. View pictures of major volcanic landforms, and volcanic rocks.
US Geological Survey
U.s. Geological Survey: Quick Reference for Volcano Types
Succinct descriptions of the different kinds of volcanoes, with additional links for each.
Science4Fun
Science4 Fun: Volcano
Illustrated resource explores how volcanoes are formed and the different types of volcanoes.