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Volcanoes
Key vocabulary to support teaching of volcanoes
Term | Definition |
---|---|
Lava | The name given to liquid magma when it reaches the surface of the earth. |
Magma | Molten rock in the mantle. |
Pyroclastic Flow | Fast moving current of hot gas and rock ejected explosively from a volcano and moving at great speed. |
Richter Scale | Measures the strength (magnitude) of the volcano. |
Vent | The opening through which lava flows in a volcano. |
Volcanic Bombs | A lump of lava thrown out by a volcano. |
Volcano | An opening in the earth's crust from which molten lava, rock fragments, ash, gases and dust are ejected. |