The Living Earth
The earth is constantly giving itself face lifts, usually through natural disasters especially volcanoes. Everyone thinks they know what a volcano is, what it looks like, and what it does. The common impression of volcanoes is a snow capped cone-shaped mountain. Many, however, do not realize that volcanoes can be a crater in the ground or a crack in the earth. The volcano that people commonly think of is called a stratovolcano. This is because cones are built up of layers (strata) of lava and volcanic ash. A less known type of volcano is explosion crater which are produced when hot magma (usually basalt) reacts violently with shallow water, or water soaked ground. Something that resembles explosion crater is when a stratovolcano blows itself to bits leaving a similar crater. Many times these craters create bays to large bodies of water or lakes. A well known example of this is Crater Lake in Oregon, which was formed when a volcano blew up 6,845 years ago. The last type of volcano is lava erupting from cracks this is called fissure eruptions; this can produce huge thick piles of lava. The total number of recognizable volcanoes is about 10,000. Of that 10,000, 529 are active meaning they have erupted
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Approximate Word count = 1193
Approximate Pages = 5 (250 words per page double spaced)
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