CCKH+3.2

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 * Magma Chamber:** magma collects in a pocket beneath a volcano.
 * Pipe:** a long tube in the ground that connects the magma chamber to Earth's surface.
 * Vent:** an opening where molten rock and gas leave the volcano.
 * Lava Flow:** an area covered by lava as it pours out of a vent.
 * Crater:** a bowl-shaped area that may form at the top of a volcano around the volcanoes central vent.
 * Silicia:** material that is formed from the elements oxygen and silicon, is one of the most abundant materials in Earth's crust and mantle.
 * Pahoehoe:** is fast moving, hot lava
 * Aa:** is slow moving, cool lava.
 * Pyroclastic flow:** occurs when an explosive eruption hurls out ash, cinders, and bombs as well as gases.
 * Active:** live volcano that is erupting or showing signs that it might erupt in the near future.
 * Dormant:** sleeping volcano wakens in future and erupts.
 * Extinct:** dead volcano that is unlikely to erupt again.
 * Hot Spring:** forms when underground water is heated by a nearby body of magma, rises to the surface and collects in a natural pool.
 * Geothermal Energy:** a clean, reliable energy source provided by water heated by magma.

Outline:

 * **Volcanic Activity**
 * **How Magma reaches Earth's Surface**
 * magma rises
 * volcano erupts
 * during eruption, magma rushes out
 * **Inside a volcano**
 * magma chamber
 * pipe
 * vent
 * lava flow
 * crater
 * **Characteristics of Magma**
 * silicia
 * **Types of Volcanic Eruptions**
 * silicia determines eruption- quiet/explosive
 * quiet eruptions
 * pahoehoe
 * aa
 * explosive eruptions
 * pyroclastic flow
 * **Stages of a volcano**
 * active
 * dormant
 * extinct
 * **Other types of Volcanic Activity**
 * hot spring
 * geothermal energy
 * **Monitoring Volcanoes**
 * easier predict volcano than earthquake
 * **Volcano Hazards**
 * people living near dormant earthquakes- unaware of danger

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