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Volcanoes
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Question | Answer |
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What are volcanoes | A mountain or hill typically conical having a crater or vent through which lava , rock fragments , hot vapour and gas are or have been erupted from the earths crust |
Where can volcanoes be found | they are normally found where the plates are diverging or converging |
How do volcanoes occur | They occur because the earths crust is broken into 17 major rigid techtonic plates that float on a hotter , softer layer in its mantle. |
What is the difference between magma and lava | Magma is molten rock below the surface of the earths crust when this molten rock reaches the surface of the earth is then called lava |
What are the stages of a volcanoes life | Active , dormant and extinct |
What do these stages mean | Active has erupted recently and is likely to erupt again in the near future Dormant: has not erupted in recent history but is expected to erupt again Extinct: has not erupted in recorded history and is not expected to erupt again |