by volcanoes around the world (40 marks) A hazard is defined as something which has the potential to kill or cause harm. However a hazard is only a risk to people if they are exposed to it. This is when a hazard can cause disasters. For example‚ a volcano is only a hazard if the population comes in contact with the consequences of its activity. Hazards and their likeliness to become disasters can depend on many different factors‚ for example how developed a country exposed to the hazard is‚ the size
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that fall into a pile around the vent. The pile forms an oval-shaped small volcano‚ as shown in this picture. During each eruption‚ hot molten lava was ejected into the air from a vent. It cooled‚ solidified‚ and fell back to earth as ash‚ cinders‚ popcorn-sized particles (“scoria”)‚ and larger “bombs” as much as three feet in diameter. The larger‚ heavier material accumulated around the vent to build a cone-shaped volcano with a crater depression in the centre. These ejected materials will settle
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on increased activity on the volcano. However‚ in 1978‚ Dwight Crandell and Don Millineaux of the USGS suggested that Mt. St. Helens was potentially the most likely volcano to erupt in the twentieth century; based their evidence on the relatively young age of the volcano‚ and its frequent historical eruptions (Explore). Since about 1400 A.D.‚ eruptions have occurred at approximately one every 100 years. Before the 1980 eruption‚ it had been 130
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live on volcanoes are safe on many levels like some volcanoes people live on are super quiet eruption volcanoes and they do not erupt and explode like volcanoes people think of. But sometimes disaster do strike and a quiet volcano can become explosive because it is a composite volcano and it can kill and take out everything in its path. Living on volcanoes can be very dangerous if no one knows what their doing however it also can be very good for
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Explain the differences between Basaltic‚ Rhyolitic and Andesitic volcanic eruptions with reference to processes‚ which lead to the eruptions‚ the type of volcano produced and the reasons for the differences between the material erupted by these volcanoes. Volcanic eruptions are caused by a red-hot liquid rock‚ called magma inside the earth’s core. Volcanoes erupt when magma rises to the surface of the earth‚ which causes bubbles of gas to appear in it. This gas can cause pressure to build up in
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Being so close to an active volcano poses many risks to communities. Even though Mount St. Helens erupted over 30 years ago we know that it is still an active volcano. Future eruptions can kill and injure entire communities. Since the eruption in May of 1980 of Mount St. Helens‚ geologists have come to a better understanding of both the mechanics of volcanoes and the dangers they present to the environment and communities. Did you know that volcanic ash is actually small glass particles? Or that
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-. -"\ i I l.r "l \(t..: L_$J.{:; L1 ;: t‚{*J Bachelor’s Degree Programme (BDPy ASSIGNMENT 2012-13 (For July 2012 and January 2013 sessions) FOUNDATION COURSE IN ENGLISH.OI (FEG-O1) g6S9iignesu wlili‚lffi3i{; School of Humanities Indira Gandhi National Open University Maidan Garhi‚ New Delhi- I 1 0 068 \\ FOUr\DATTON COURSE IN ENGLISH-I (FEG-01) Programme: BDP/2012-13 Course Code: FEG-01 Ilear Student‚ You are required to do one assignment for the Foundation Course in English-01. It is
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In this essay I will tell you about the main parts of a volcano and it’s origin. The first main part I will tell you about is the magma chamber. A magma chamber is a large pool of molten rock‚ also called magma‚ sitting underneath the Earth’s crust. The magma chamber can be more than three miles below the Earth’s surface and the magma waits there for the pressure and gases to become too much to stay stable. The magma in the magma chamber is less tense than the mantle surrounding it‚ so it moves toward
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is an important and interesting‚ as well as a destructive volcano. Mount Nyiragongo is located in the eastern part of Zaire‚ or the Democratic Republic of Congo in Africa. It is at a latitude and longitude of 1.5S‚ 29.3E. Like the majority of African volcanoes‚ is associated with the East African Rift and is part of Africa ’s Virunga Volcanic Chain. This mountain chain is one of Africa ’s most prominent geologic features ("Nyiragongo Volcano‚ Democratic Republic of the Congo"). With a summit elevation
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volcanic eruptions known to man to date. As our text states‚ “this famous volcano erupted in the year 79 AD‚ ejecting a huge cauliflower-shaped cloud of ash and debris that rapidly settled to the Earth (Strahler 436).” After doing some outside research on this magnificent volcanic landform‚ I found quite a few things: “Mount Vesuvius is located in Italy‚ near the areas of the Tyrrhenian Sea and the capital of Italy. The volcano also buried two major cities ("Volcanic Eruptions: Mount Vesuvius").” Another
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