I have a test on volcanoes tomorrow will you help me.
volcanoes erupt because density and pressure.The lower density of the magma realative of the surrounding rocks cause it to rise ( like air bubbles and syrup)
An erupting valcaneo can trigger tsunamis, flash floods, earth quakes, mud flows and rock falls.
More than 80 precent of the earth's surface is volcanic in origin.The sea floor and some mountains were formed by coutless volcanic eruptions.Gaseous emissions from volcano formed the earth's atmosphere's.
The danger area around a volcaneo covers about a 20 mile radius.
volcanic lightning occurs mostly within cloudy ash during an eruption and created by friction.