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3:2 Volcanoes
Volcanic Activity
Question | Answer |
---|---|
Pocket of magma beneath Earth's surface. | magma chamber |
A long tube into the ground that connects the magma chamber to Earth's surface. | pipe |
opening of a volcano where magma is forced up | vent |
Melted rock flowing on the surface of the Earth. | lava flow |
circular depression at the top of a volcano. | crater |
A material found in magma that is formed from the elements oxygen and silicon. | silica |
A hot, fast-moving type of lava that hardens to form smooth, rope-like coils. | pahoehoe |
A slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe | aa |
A super-heated cloud of ash, gas and rock. | pyroclastic flow |
A volcano that is currently erupting or likely to erupt. | active volcano |
When it is not erupting but capable of erupting in the future. | dormant volcano |
A volcano that no longer erupts and is in the process of eroding. | extinct volcano |
A pool of groundwater that has risen to the surface after being heated by a nearby body of magma. | hot spring |
Fountain of water and steam that erupts from the ground. | geyser |
underground heat warms water, and steam turns turbines and generators. | geothermal |