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volcanoes - Coggle Diagram
volcanoes
cause of eruptions:
heat and pressure inside the earth
Plate tectonics
magma chambers
types of volcanoes
active
the ones which are presently active and erupted in the recent past
dormant
the ones which are not active and didnt erupt in a very long period, from the historical period
extint
didnt erupt from pre historical period and may not become active at all
products of a volcanic eruption
magma and lava
solid matter, like ashes, etc.
structure
core
vent
effects of volcanoes
constructive effects
formation of landforms
destructive effects
destruction of farmland
volcanic ash which is toxic
poisonous gas evolution
eruptions in water makes tsunami waves causing floods
volcanic zones
circum pacific best
midworld mountain belt