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Volcano Crossword

Across
A mudslide caused by mixing volcanic ash and debris with water
A type of highly viscous magma with high silica content
A crack from which volcanic gases escape into the atmosphere
The raising of rocks from their place of formation
The ability of a liquid to flow
An avalanche of hot lava fragments which cascades down at speeds of at least 50 mph
What magma is called when it reaches the surface
During a volcanic eruption the sudden decompression of hot pressurized volcanic gas
Another name for silicon dioxide, the basic building block of volcanic rocks
A frothy basaltic rock, full of small gas bubbles usually it is black or red in color
The term used for when a volcano is sleeping or inactive
The zone of the earth below the crust and above the core
Down
Fine particles of pulverized rock that are blown from an explosion vent
Scientific theory explaining the movement of the continents of the earth's surface
Prior to eruption a volcano enters a state when magma is interacting with rock, ground water or hydrothermal fluids to produce notable signs
The effusion of lava and fragmented material to the surface of earth by volcano
When a volcano is not presently erupting and is not likely to do so for a long time in the future
The down-slope movement of rock and soil under the influence of gravity
A vent in the surface of the earth through which magma and gases and ash erupt
The large, basin shaped crater at the top of a volcano
A large crack in the ground allowing magma to travel up and erupt onto the surface
The most common type of rock formed from the cooling of lava
Molten rock from the earths interior