Stacjo 's Profile

Now I’ll be the first to admit that it’s not a perfect question in terms of
trying to get some sense of the personal learning lives from the teachers who
were participating. But in the context of a discussion we’d been having about
the passion-based learning opportunities that the Web now affords, I was hoping
to learn what they wanted to think more deeply about when it came to their own
interests and their own learning. Unfortunately, most of what I got back (on the
first go round at least; I asked them to do it again) was about how to use the
tools in the classroom, and very little about what they wanted to learn about
learining around their own passions with others who share them.

What is a volcano?

We could say a volcano is a liquid rock plumbing system which extends from
several 10's of kilometers depth to the earth's surface, and includes the near
vent deposits of eruptions. Is this a good definition? Is this a volcano?
How about this? Or this? Or this?

A volcano is an opening, or rupture, in a planet's surface or crust, which allows
hot, molten rock, ash, and gases to escape from below the surface. Volcanic
activity involving the extrusion of rock tends to form mountains
or features like mountains over a period of time. The Ancient Romans called
volcanoes Vulcano, after Vulcan,
their fire god.^[1]

Volcanoes are generally found where tectonic plates are diverging or converging. A
mid-oceanic ridge, for example the Mid-Atlantic
Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the
Pacific Ring
of Fire has examples of volcanoes caused by convergent tectonic plates coming together.
By contrast, volcanoes are usually not created where two tectonic plates slide
past one another. Volcanoes can also form where there is stretching and thinning
of the Earth's crust
(called "non-hotspot intraplate volcanism"), such as in the African Rift
Valley, the Wells Gray-Clearwater volcanic
field and the Rio Grande Rift in North America and the
European Rhine Graben with its
Eifel volcanoes.

The Diploma Programme
The International Baccalaureate (IB) Diploma Programme is a
challenging two-year curriculum, primarily aimed at students aged 16 to 19. It
leads to a qualification that is widely recognized by the world’s leading
universities. More information about the Diploma Programme can be found on the IB public
website.