Volcano

• Ring of fire


  Philippines
• volcanoes


  opening on the surface of a planet or moon that allows material warmer than its surroundings to escape from its interior
• Active


  erupted for the last 600 years or those that erupted 10,000 years ago based on the analysis of the material
• inactive


  could erupt but has not erupted for more than 10,000 years dormant or sleeping volcanoes
• Cinder


  Loose fragments of solidified lava
• cinder cone


  narrow base and steep slope
• Composite cone


  Alternate solidification of lava and cinders large and symmetrical slope
• shield cone


  accumulation of lava resulting in broad slightly domed structure that resembles a warrior shield
• summit 


  Highest point of a hill or mountain
• crater


  large pit or hollow forming the mouth of a volcano
• caldera 


  Large volcanic crater. Formed by a major eruption
• Slope


  One end or side is at a higher level than another, a rising falling surface
• base 


  lowest part or edge of something supported
• viscosity 


  resistance to flow
• ash 


  fragments of rocks
• Basaltic flow


  Fluid like, can travel a great distance formina a thin sheet
• andestic flow


  too viscous to travel far. break up as it flows
• rhyolitic spire


  too viscous to flow at all, rises out of a vent as a columnar plug
• rhyolitic dome


  piles up at a vent as a dome
• Phreatic or hydrothermal


  Steam driven eruption ash columns taal volcano
• Phreatomagnetic 


  Violent eruption contact between water and magma
• Strombolian eruption 


  Low level eruption
• vulcanian


  tall eruption
• plinian 


  explosive type of eruption pinatubo