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?"
Between 80 and 300 Mph depending on the size if the eruption.
http://wiki.answers.com/Q/What_is_the_speed_of_pyr...
Pyroclastic flows are fluidized masses of rock fragments and gases that
http://www.chacha.com/question/what-is-the-definit...
- When a volcanic eruption is taking place, a lot of the gas from the lava is removed when it comes out of the vent (process known as degassing) and this causes the vent of the volcano
http://answers.yahoo.com/question/index?qid=200909...
( ′pī·rə′klast ) (geology) An individual pyroclastic fragment or clast.
http://www.answers.com/topic/pyroclast
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