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Created page with "==Key Stage 4== ===Meaning=== A '''pyroclastic flow''' is a fast moving stream of hot ash, gases and steam from a volcano usually caused by an explosion of the v..."
==Key Stage 4==
===Meaning===
A '''pyroclastic flow''' is a fast moving stream of hot ash, [[gas]]es and [[steam]] from a [[volcano]] usually caused by an explosion of the [[volcano]] due to the [[pressure]] of [[magma]] underground.
===Meaning===
A '''pyroclastic flow''' is a fast moving stream of hot ash, [[gas]]es and [[steam]] from a [[volcano]] usually caused by an explosion of the [[volcano]] due to the [[pressure]] of [[magma]] underground.