The Eruption Of A Volcano

A volcano is an earth hazard that occurs on faults between tectonic plates on a destructive boundary and an eruption is a natural disaster. A primary impact happens immediately after the disaster and before any response like death or collapsing or destruction of buildings. A secondary impact occurs later after the disaster, such less farm produce or a reduction in tourism. The severity of these impacts will differ considerably in a MEDC and LEDC where volcanic eruptions have taken place. These may be seen in the Mount St. Helen volcano eruption as well as in the Iceland volcanic eruption. They may also

analyse the factors that cause differences in the hazards posed by volcanoes around the world (40 marks)

Volcanoes can be found throughout the entire world and are formed when there is a rupture in the mantle of the Earth's crust. This effect allows the output of volcanic lava, ash, and various types of gases. These tectonic plate breaks are normal, the planet Earth is divided into 17 tectonic plates and consistently move against each other forming shifts from low to high intensity. It can cause displacement of earth or water.

The Earth’s outer crust is made up many tectonic plates that move over the surface of the planet. When the plates come collide, volcanoes will form sometime (National Ocean Service). Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the sea floor, at what is called a “hot spot” (National Ocean Service). A hot spot is a plume of magma or molten rock that rises from within the Earth then reaches the surface forming underwater volcanoes which may grow tall enough to

A volcano is defined as a mountain or hill that usually has a cup like crater at the summit. A volcano can be compared to a vent in the earths crust through which lava, ashes and steam are expelled (Volcano, n.d.). There are three main types of volcanoes that scientist have discovered active, dormant, and extinct (howstuffworks.com). Active volcanoes are the ones which have erupted recently, or are expected to blow soon (howstuffworks.com). For example Kilauea volcano on Hawaii is the world’s most active volcano (volcanodiscovery.com). A dormant volcano is one that hasn’t erupted in a long while but has a chance erupt again in the future (howstuffworks.com). Best example there is of a dormant volcano is Mauna Kea which is one of the five mountains that make up the big island of Hawaii (Crain, 2009). And extinct volcanoes are the ones that erupted thousands of years ago and has no possibility of erupting again (howstuffworks.com). An extinct volcano is mount Buninyong which is located in Austria the last time this volcano erupted was a little over ten centuries ago and is now somewhat a tourist attraction.

To begin, a volcano is a mountain with an opening in the top or side that sometimes sends out rocks, ash, lava, in a sudden eruption (Merriam-Webster, n.d.). A volcano erupts when pressure builds inside the mountain. Magma, lava while it is inside the volcanoe, pushes through the weakened crust. When this built up pressure is released, Earth’s plates move causing a volcanic eruption. Also, dangerous flows of steaming lava can reach up to 2,000

The active volcano that I chose to research is Popocatepetl volcano. Popocatepetl volcano is an active volcano located in Mexico. The volcano is oftentimes referred to as “El Popo” by many Mexicans. El Popo is a composite cone volcano. Being a composite cone volcano, El Popo is characterized by a steep cone shape, which was created by many composite layers of material pouring out over numerous eruptions. The lava that comes out of El Popo is extremely viscous. The highly viscous lava does not travel very far, and typically cools down rapidly. Scientists believe that El Popo is about 730,000 years old. It has erupted more than 15 times since 1519. In 1994 El Popo produced gas and ash, which caused nearby towns to evacuate. The toxic

The home of Pele, the Hawaiian volcano goddess, Kilauea Volcano has been erupting for the last 30 years. Since January 3, 1983, the world has stopped to look at the lava flowing out of the crevices of the crater. However, despite the meaning of the name, Kilauea in Hawaiian (which translates to “spewing” or “much spreading”), many scientists are amazed that the volcano has a continuous flow (USGS 1,2,3). Nonetheless, as the East Rift Zone spreads, Kilauea has started overflowing; and the once majestic lava now spills out of Pu’u ‘O’o Crater into nearby towns. Scientists and citizens scramble to find the answer: how do we stop a volcanic eruption from destroying nearby civilization without stopping the natural occurrence?

A volcano is a weak spot in the crust where molten material, or magma, comes to the surface. In a volcano there is a magma chamber, pipe, vent, lava flow, and craters. A magma chamber is the pocket where magma collects under or below a volcano. The pipe of a volcano is the long tube in the ground that connects the Earth's surface to the magma chamber. A vent in a volcano is where the molten rock and gas from the volcano leave through an opening. The lava flow is a certain area that is covered by lava that is coming out of the vent. Lastly, a crater is a bowl shaped area that is formed at the top of the volcano.

The theory of plate tectonics states that earth’s crust is broken up into plates. Geologists speculate that a hot spot in the upper mantle of the earth's crust is responsible for the heat that derives the Yellowstone thermal and volcanic activity; the result of three gigantic volcanic eruptions that caused by the underlying hot spot. The volcanic eruptions started with the collapse of the mouth of its volcano and formed large volcanic craters called calderas. Yellowstone’s volcanic past has the first and the largest caldera that blew up about over two million years ago, and it was

Volcanos typically formed as a consequence of plate tectonics. In fact, they tend to form when plates converge into each other. In the process of subduction, one plate of the lithosphere, cupped by oceanic crust, slides beneath another one, giving origin to a subduction zone. While sliding down, heat is generated and water is released, causing the formation of magma that rises up to the surface and forms volcanos parallels to overriding plate. The Pacific West region of the United States is known for presenting this type of structure in which the oceanic lithosphere pushes towards the continent and sinks down into the asthenosphere.

A volcano is a cone-shaped mountain with serious destructive capabilities. Volcanoes are created when magma from the Earth’s mantle comes up from the ground to the surface and spews lava which solidifies and over time, the volcano increases in size. Tectonic plates are the reason for this, as

Some volcanoes happen often but others haven't erupted for a long time. Some volcanoes are found are the Pacific Ocean. Others are found around the Atlantic and Indian Ocean.Volcanoes are mountains that are coned shaped. Magma is made beneath the Earth's crust and extreme pressure makes the magma rise, it breaks through weak spots and comes out of mountains which makes it a volcano. Volcanoes explosive chart is zero to eight. Zero means non explosive and eight means mega colossal.

Ash plumes and steam rose into the bright blue sky as the underground earthquake shook the land and rattled windows all across the eighteen mile town. As the jet circled the island, in view of lovely beaches and emerald water, looming over this lush paradise was the screaming volcano. Volcanos erupt when the pressure inside of them becomes so great that the magma surges up and forces its way out. An exploding volcano can rip apart a mountain in just seconds, when the eruption is over, a landscape is changed forever. The united states is home to more volcanos than any other country except Indonesia, and Japan. The majority of these volcanoes are in Alaska. Until recently, there was no way to predict when a volcano would blow, although volcanoes give off many warning signs before they erupt. Including smaller earthquakes beneath the volcano, slight inflation, or swelling. The rising magma eventually causes the solid rock to break, sending earthquake signals. Most volcanoes give warning signs beginning weeks or months before they blow (Lindop).

A magma chamber is a large underground pool of liquid rock found beneath the surface of the Earth. The molten rock in such a chamber is under great pressure, and when given enough time, that pressure can break an opening around it. If it finds a way to the surface, then the result will be a volcanic eruption, and the bad thing that comes from this is that since magma chamber are so deep underground, they are impossible to detect until right before the eruption, when it is too late.