Conclusion for the project of volcanic eruption
Answers
Explanation:
Volcanoes are best defined as cracks in the Earth’s surface where magma has flowed and turned into lava. Volcanoes can be either active, dormant or extinct. While active volcanoes erupt regularly, dormant volcanoes erupted in the past, but do not now; and extinct volcanoes have never erupted and scientists do not expect that they will.
Scientists also classify volcanoes further as to their form. These forms include fissure volcanoes, composites, cinder cones, shield volcanoes and lava domes. Fissure volcanoes form when tectonics plates spread apart, while composites form when two plates meet, and one is beneath the other. Composite volcanoes have a crater and several layers of lava and hardened ash and debris. They can erupt because of gas build-ups.
Cinder cones often form on other volcanoes as cooled lava and usually only erupt once. Lava domes can be quite explosive, while shield volcanoes are not. In lava domes, lava can plug the vent causing a build-up, which can lead to an eruption. Shield volcanoes are mainly comprised of many different layers of hardened lava.
500 Volcanoes around the world
There are about 500 volcanoes all over the world with about 3/4 of them located around the “ring of fire”. The ring of fire is that area where the Pacific plate meets other plates. Although volcanoes can do a lot of damage, they have also been known to create land. Volcanoes helped create some of the Hawaiian Islands, which many people enjoy today.
The famous volcano in Italy, Mount Vesuvius, is the most active volcano in all of Europe. In the year 79A.D., it erupted and killed more than 2,000 people in the city of Pompeii. The volcano turned the entire city into ashes, and left it buried in lava. Although the volcano is now inactive, it still shows some signs of activity beneath its surface in the form of small lava discharges and smoke.
The Kilauea volcano in Hawaii, located in the south east portion of the island, is mostly immersed within the ocean. This volcano is a magnificent structure making it one of the most widely known volcanoes anywhere. This volcano has destroyed over 200 homes in the past. Centuries old lava covers the craters of this mountainous volcano which is about 200 years old.
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