explain about Volcano eruption
Answers
Explanation:
A volcano begins to form when magma, which is hot molten rock from deep within the earth, rises toward the earth's surface and collects in magma chambers. As pressure builds within these chambers, magma is expelled through a vent or fissure in the earth's surface as a volcanic eruption.
Answer:
A volcanic eruption is one of the most dangerous and magnificent natural disasters. When a volcano erupts, the volcano sends out ash clouds, lava and even volcanic bombs. There is a high risk of danger from slow moving lava; though, the lava might move slowly, it is very dangerous and can cause a lot of damage to property and human life.
Volcanic eruptions comprise of 3 stages:
Magmatic eruptions – when gas is released under decompression.
Phreatomagmatic eruptions – when a thermal contraction comes from water.
Phreatic eruptions – when steam erupts.
The Magnitude of Volcanoes
When there is an earthquake, little vents are created in which magma is allowed to form. This is pushed up through these vents and towards the crust of the volcano. Steam vents are created when the magma reaches a certain level and reaches a boiling point which begins the eruption. The eruption might result in a total eruption. This is when gas driven explosion send magma to the volcano’s crust creating lava outpouring from the volcano.
Some eruptions are not as strong as others. All volcanic eruptions can vary in strength; with some not reaching any civilians or causing too much damage. However, others can spread over a vast area, sometimes reaching several miles from the volcano. Some eruptions do not always contain lava flow or lava fountains which aren’t always very dangerous. However, some eruptions can be on a huge scale, very violent and very, very dangerous with explosions heard from the volcano.