4 Geography · 4.1.2 Interior of the Earth and plate tectonics

4.1.2.8 Volcanoes: types, volcanic landforms and the Pacific Ring of Fire

A volcano is a vent through which molten rock, gases and fragments reach the surface; the type of eruption and landform depends on how fluid the lava is, and most active volcanoes sit on plate boundaries, especially the Pacific Ring of Fire.

  • APPSC Group 1
  • Advanced level
  • 8 min read
  • Full course

Key terms

  • volcano
  • magma
  • lava
  • pyroclastic
  • shield volcano
  • composite volcano
  • caldera
  • flood basalt
  • Deccan Traps
  • mid-ocean ridge volcano
  • batholith
  • laccolith
  • lopolith
  • phacolith
  • sill
  • dyke
  • hotspot
  • Ring of Fire
  • Barren Island
  • Narcondam

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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