A volcano is anopening, or rupture, in aPlanet’scrust, whichallowshot magma, Lava flow, volcanicash and gases toescape from themagmachamber belowthe surface.
Volcanoes are found were tectonic plates arediverging.
1.Large magma chamber2. Bedrock3. Conduit (pipe)4. Base5. Sill6. Dike7. Layers of ash emittedby the volcano8. Flank9. Layers of lava emittedby the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15. Ash cloud.
Types Of Volcanic Eruptions.
When rock inside the Earth becomes hot enough it melts.This molten rock, or magma, is less dense than thesurroundingsolid rock. Just as an object that is less dense than water willfloaton water, the relatively low density of the magma cause it toriseto the surface of the Earth.If the magma contains water and dissolved gases, when themagmareaches the surface the water and dissolved gases willsuddenly expandinto steam and gas, causing a violent eruption.