What is a pyroclastic flow?

Answer

This is the big cloud of ash you see shortly after the volcano erupts. It's a giant cloud of ash, hot rocks, and other debris from the volcano. It's not rare to see lightning in one of these flow clouds. These pryroclastic flows are highly dangerous and will kill a person within seconds. It will destroy everything in it's path. It's very fast moving.
Q&A Related to "What is a pyroclastic flow?"
Pyroclastic flow is gas that result from water mixing with loose material on the steep sides of a volcano.
http://wiki.answers.com/Q/What_is_a_pyroclastic_fl...
Pyroclastic flows are fluidized masses of rock fragments and gases that move rapidly in
http://www.chacha.com/question/what-is-pyroclastic...
A major question in volcanology is what happens when pyroclastic flows enter the ocean. To date, the topic remains controversial due to the difficulty in sampling in situ submarine
http://www.eurekalert.org/pub_releases/2006-06/gso...
lava and rock fragments ejected. in a volcanic eruption.
http://wiki.answers.com/Q/What_are_pyroclastic_deb...
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