JLKP+3.2

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Section 3-2 Volcanic Activity (back to homepage)

 * Volcabulary**


 * magma chamber**- the pocket beneath a volcano where magma collects
 * pipe**- a long tube in the ground that connects to the magma chamber
 * vent**- an opening where molten rock and gas leave the volcano
 * lava flow**- the area covered by lava as it pours out of the vent
 * crater**- a bowl-shaped area that may form at the top of a volcano
 * silica**- a material formed from the elements oxegon and silicon
 * Pahoehoe**- fast-moving, hot lava
 * aa**- lava that is cooler, and moves slower
 * pyroclastic flow**- something that occurs when an explosive eruption hurls out ash, cinders, bombs, and gases
 * active volcano**- a volcano that is alive, erupting or shows signs of erupting in the future
 * dormant volcano**- a volcano that is sleeping
 * hot spring**- something that forms when groundwater heated by a nearby body of magma rises to a surface, and collects into a natural pool
 * geothermal energy**- a clean reliable energy source provided by water heated by magma in volcanic areas