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3:2 Volcanoes
Volcano activity
Answer | Question |
---|---|
Magma chamber | Pocket of magma beneath Earth's surface. |
Pipe | A long tube into the ground that connects the magma chamber to Earth's surface. |
Vent | Opening of a volcano where magma is forced up. |
Lava flow | Melted rock flowing on the surface of the Earth. |
Crater | Circular depression at the top of a volcano. |
Silica | A material found in magma that is formed from the elements oxygen and silicon. |
Pahoehoe | A hot fast-moving type of lava that hardens to form smooth, rope-like coils. |
Aa | A slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe. |
Pyroclastic flow | A super-heated could of ash, gas, and rock. |
Active volcano | A volcano that is currently erupting or likely to erupt. |
Extinct volcano | A volcano that no longer erupts and is in the process of eroding. |
Hot spring | A pool of groundwater that has risen to the surface after being heated by a nearby body of magma. |
Geyser | Fountain of water and steam that erupts from the ground. |
Geothermal | underground heat warms water, and steam turns turbines and generators. |
Dormant volcano | When it's not erupting but capable of erupting in the future. |