gas are released. The magma, once it reaches the surface, is called lava. The lava forms a

hill around the vent or opening. The lava can flow out as a viscous liquid, or it may

explode from the vent as solid or liquid particles.

There are three different types of volcanoes that can be formed around a vent. The

ways to identify each type are what it is composed of and what into what shape it is

formed. The shield volcano, which takes its name form its resemblance to the shields of

early Germanic warriors, is a quietly erupting flow that forms gently slopping mountains.

The dome that is formed over a period of time involving multiple one to ten meter thick

lava flows. This type of volcano is found mostly in Hawaii and Iceland.

The second type of volcano dome formation is the cinder-cone. This volcano has

high gas content and high viscosity (the thickness of the lava), therefore producing a

much more explosive eruption than that of the shield volcano. These volcanoes blew

volcanic bombs and cinders into the air which land beside the vent to form a step-sided

To cause the eruption itself I mixed: dish washing detergent, red food die, warm water,

intrusion is a dike. A dike is hardened magma in a vertical crack or fissure forming a

unusually stiff intruding magma that may not flow easily enough to spread between layers

erupted many years ago but now has no sign of life is called dormant. If scientist feel that

Some common words found in the essay are:
Crater Lake, Hawaii Iceland, Types Ejecta, Volcanic Structure, Cause Volcano, Types Eruptions, Volcanian Eruption, Types Volcanoes, , volcanic bombs, igneous intrusion, earth's crust, lava flows, lava tunnel, rock sill, magma chamber, type volcano, igneous rock, lava flow, type igneous intrusion, fluid lava flows, eruption viscous magma, active volcano erupted, plate tectonics theory,
Approximate Word count = 1425
Approximate Pages = 6 (250 words per page double spaced)