Important volcano words
In volcanic terms, (e-rup-shun) is a discharge or emission of matter from down below the earth's crust through an opening on the earth’s surface.
This is one that has not had any eruptive activity in 10,000 years and not expected to have any in the next few years.
This is one that has not erupted in a long while, but scientists believe will erupt at some time.
This is a volcano that has erupted in recent time or still erupting.
A weak zone in the earth’s crust where two tectonic plates are moving away from each other. They are also called divergent plate boundaries.
A weak zone in the earth’s crust where two tectonic plates are moving towards each other.
A pyroclastic flow is a mixture of hot steam, ash, rock and dust.
This is a massive volcano that results in a depression (caldera), with ridges of higher lands bordering it.
This is an example of a supervolcano, with a depression of about 55km by 80km wide. Its last eruption was about 1630,000 years ago.
Our research for this topic included these sources:
www.pubs.usgs.gov/gip/volc/intro.html, www.sciencekids.co.nz/sciencefacts/earth/volcano.html., www.weatherwizkids.com/weather-volcano.htm., dosomething.org., www.onegeology.org/extra/kids/volcanoes.html., www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/volcanoes_rev2.shtml., http://en.wikipedia.org/wiki/Volcano