How do volcanoes occur & what happens when they do?
A volcanic eruption occurs when pressure builds up as well as when molten rock, ash and steam
pour through a vent in the earth's crust. Gases & rock erupt up through the opening vent which
causes the air to be filled with lava fragments. Eruptions have the ability to cause lateral blasts,
lava flows, hot ash flows, avalanches...etc. Some volcanic eruptions are so hard out, that they
have been known to knock down entire forests.
pour through a vent in the earth's crust. Gases & rock erupt up through the opening vent which
causes the air to be filled with lava fragments. Eruptions have the ability to cause lateral blasts,
lava flows, hot ash flows, avalanches...etc. Some volcanic eruptions are so hard out, that they
have been known to knock down entire forests.
An erupting volcano can also trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls.
Why do volcanoes erupt?
The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle.
These plates sometimes move. The friction causes earthquakes and volcanic eruptions near
the edges of the plates. The theory that explains this process is called plate tectonics.
These plates sometimes move. The friction causes earthquakes and volcanic eruptions near
the edges of the plates. The theory that explains this process is called plate tectonics.
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