Volcanic eruption

• Chemical composition - magma resistance to flow is a function of its " internal friction " derived from the generation of chemical bonds within the liquid.
• Plinian - most explosive type, which generates sustained eruptive plume fast pyroclastic.
• Viscousity of magma decreases with temperature.
• Viscousity - is define as the property of the material's resistance to flow.
• Vulcanian - a thick, viscous, magma flows around the vent , violent eruption of viscous lava.
• Volcanic eruption is one of the several forces that change the surface of earth.
• Causes of an eruption include lithostatic pressure, magmastatic pressure, unlonding, and hydrothermal alteration.
• Ash plume is the cloud of ash that comes out of the crater.
• Hawaiian is the least violent type of volcanic eruption, with highly fluid or runny lava flowing out in several events.
• Strombolian is a type of volcanic eruption that is violent, featuring continuous ejection of magma and gas.