Essay on Volcanoes

Volcanoes are natural phenomena on the surface of the earth and molten rocks and gases escape from below the surface (Tarbuck, 139). It is very interesting to observe these volcanoes and observe those amazing events and majestic lava eruptions. The word "volcano" is thought to come from Volcano Island Vulcano in Italy's Aeolian Islands, and the name of the volcanic island comes from the myth of the name of Vulcan, Roman Vulcan. Volcanic rock consists of several types that can extrude several types of magma and emit various gases. These extruded materials can affect the structure and atmosphere of the earth.

I forgot to mention important things, but complex volcanoes also form part of the earth's surface. Complex volcano has a conical shape with steep top area and gradually sloping side and is structurally almost symmetrical (Tarbuck, 141). These volcanoes are rich in magnesia and emit gaseous magma. And it is very viscous and has a short travel distance. These three kinds of volcanoes occupying the earth seemingly have different physical characteristics and behavioral changes.

Volcano eruption is one of the most dangerous and troublesome natural disasters. Several factors were considered during these volcanic eruptions. Each type of volcano discussed above has a different form of lava: one is very fluid and the other is very viscous. Lava can be extruded in various forms as it is extruded from a volcano. One format is Pahoe Ho. Pahoe Hui, which is common in Hawaii Volcanoes, is a kind of smooth and viscous lava, which causes condensation of lava as lava is released from the volcano (Williams, 32). Another form of lava is lava called aa. This lava consists of coarse, coarse, thorny pieces and measures the pieces separated into different pieces (Williams, 37). Aa flows coolly and can move at speeds of 5 to 50 meters per hour (Tarbuck, 145). Lava can also form blocks

Volcanoes can be classified by type. Structure and composition determine the type of volcano. Shield volcano is a lowland dome type mountain formed by lava, it is easy to flow and covers a wide area. Thinder cone volcanoes are the simplest form, and they are usually discharged from vents with a bowl shaped crater at the top of the mountain. Complex or layered volcanoes are the most common type and they are towering mountains, steep slopes, alternating interior rock layers and magmatic layers. The two basic classifications of volcanoes are based on the type of volcanic eruption they produce: explosive (or middle) and quiet (or crack). Explosive volcanic eruptions are caused by accumulated gas under high viscosity (thick and slow flowing) magma caught in the deep part of the volcano. Volcanic eruptions are rapid and violent, often releasing lava, volcanic ash, and volcanic material. Quiet volcanic eruptions usually emit a large amount of lava during long cracks or interruption.

What comes from a volcano * Lava * Tephra (rock fragments) * Why does the gas eject? When magma and natural gas find escape routes, the volcano erupts. Volcanic eruptions may be mild and / or violent. Active volcanic type * - often * inject a dormancy - a specific period, also known as sleep * do not erupt during extinction - erupted during a volcano of at least 100,000 years or more? The volcano is a volcano that is open on the surface of the planet or in the Earth's crust, allowing hot magma volcano to be a conical structure emitted by lava. The domed structure not only adds to natural beauty but it makes it more spectacular, and on the other hand they are very dangerous as it helps to bring about huge disasters. As an example, the word volcano originated from the name Balkan, which means Roman Balkan. The volcanic eruption was thought to be one century ago.