Good background information on volcanoes.
Background information on volcanoes and their benefits and dangers
The following background information on the volcano was provided in 13 February and 28 May 2012 reports from the Indonesian Center of Volcanology and Geological Hazard Mitigation (CVGHM). According to the latest report from CVGHM, the present-day lake in the conical crater of Galunggung volcano has a diameter of 1 km and a typical depth of 11 m. In the middle of the lake sits a small, 30 m high, 250 x 165 m scoria cone which was produced during the final stage of the 1982-83 eruption. Galunggung’s hazards include phreatic and phreatomagmatic eruptions capable of draining the lake and producing mud flows.
Background Information for a Volcano Science Project | eHow
Begin by providing some background information on volcanoes and how they erupt. Introduce the two major types of volcanism, explosive and quiet, and ask children to find out whether the volcanoes in Costa Rica are explosive or quiet as they research what causes volcanoes to erupt. After these questions have been answered, have students prepare their papier mache to make their volcanoes with later in science class.