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Volcanoes

1: Volcanoes

2: A volcano is an opening, or rupture, in the surface or crust of the Earth or a planetary mass object, which allows hot lava, volcanic ash and gases to escape from the magma chamber below the surface. A volcano is an opening, or rupture, in the surface or crust of the Earth or a planetary mass object, which allows hot lava, volcanic ash and gases to escape from the magma chamber below the surface.

3: On Earth, volcanoes are generally found where tectonic plates are diverging or converging.

4: There are three common types of volcano: composite volcanoes, often the most deadly; shield volcanoes, which are large but generally less violent; cinder cones.

5: Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption.

6: Lava has a temperature of more than 1200 C, the rate of 2 to 40 kilometers

7: The largest volcano on Earth is Hawaiis Mauna Loa. It is about 10 km tall from the sea floor to its summit (it rises about 4 km above sea level).

8: The most active volcano in the continental USA is Mt. St. Helens (located in western Washington state).

9: Volcanic eruptions continue posing ever-greater threats to life and property.

10: South of Mexico City, Popocat petl has begun to come to life again.

11: Another million people living in the Naples area are threatened by Mt. Vesuvius continued unrest.

12: THE END

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