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quizlet.com/56637084/pyroclastic-flow-flash-cards

Pyroclastic Flow Pyroclastic flows are high-density mixtures of hot, dry rock fragments and hot gases that move away from the vent that erupted them at high speeds. They may result from the explosive eruption of molten or solid rock fragments, or both.

quizlet.com/112189554/pyroclastic-flow-flash-cards

-One type of way a pyroclastic flow is formed-A dome of viscous magma is blocking the conduit-Eventually it explodes under pressure, blasting pyroclastic material down on of the flanks of the volcano-If it is extremely violent, it could produce a lateral blast-Mount Pelée

www.reference.com/science/pyroclastic-flow-dangerous-3ed6...

Pyroclastic flow is an extremely dangerous form of lava flow resulting from volcanic eruption. It moves very fast thanks to its consistency and the effects of gravity. These flows are highly destructive and can quickly burn any vegetation, structures, and animals — including humans — that are in their paths.

study.com/academy/lesson/volcanic-hazards-definition-types...

Pyroclastic Surge. A pyroclastic surge is similar to a pyroclastic flow, but it is a low-density flow of volcanic material with a higher proportion of gas to rock. Because these surges of material ...

geology.com/volcanoes/volcanic-hazards

A pyroclastic flow is a concentrated avalanche of material, often from a collapse of a lava dome or eruption column, which creates massive deposits that range in size from ash to boulders. Pyroclastic flows are more likely to follow valleys and other depressions, and their deposits infill this topography.

www.answers.com/Q/What_are_pyroclastic_debris

Pyroclastic flows can result from really explosive eruptions, or they may occur when a thick lava flow collapses down a steep slope. A pyroclastic flow is extremely dangerous. These flows can ...

answers.yahoo.com/question/index?qid=1006051603477

Another name for a pyroclastic flow is a nuée ardente (French for "burning cloud"), which was first used to describe the disastrous 1902 eruption of Mount Pelée on Martinique. A pyroclastic flow has a red glow in the dark. Flows containing a high proportion of gas to rock are known as pyroclastic surges.

uam-web2.uamont.edu/facultyweb/edson/ch_7 practice test.htm

Chapter 7 Multiple Choice . 1. In 1980, _____ was the first Cascade Range volcano to erupt since Mt. Lassen in 1915-16. ... d. caldera collapse followed major ash and pyroclastic-flow eruptions; 6000 years ago . 40. Which one of the following shows the correct order (left to right) of decreasing magma viscosity? a. granite, andesite, basalt

www.sciencedaily.com/terms/pyroclastic_flow.htm

Pyroclastic flow from volcanoes. Pyroclastic flows are a common and devastating result of some volcanic eruptions. They are fast-moving fluidized bodies of hot gas, ash and rock (collectively ...

www.coursehero.com/file/p1actvv/The-famous-destruction-of...

39) The famous destruction of the Roman city of Pompeii was produced by _____. A) a large cinder cone burying the city in tephra B) a composite volcano erupted lava that buried the city, fossilizing people who were overridden by the fast moving flows C) a volcanic mudflow from Mt. Vesuvius that buried the people and the city D) a pyroclastic eruption from a composite volcano that buried the ...