are mountains‚ typically conical‚ where lava comes out from a magma chamber through a crater or a vent. There are two types of volcanoes; Composite and Shield. A composite volcano can be referred to as a cone volcano. These volcanoes have tall narrow cone and a wide base. Their magma chambers contain thick acidic lava‚ which means sometimes you can walk faster than the lava when it is moving! The layers of a cone volcano are usually alternated between lava and ash. A shield volcano usually has a
Free Volcano
conditions. The island has about 130 volcanic mountains‚ of which 18 have erupted since the settlement of Iceland in 874 AD. Over the past 500 years‚ Iceland’s volcanoes have erupted a third of the total global lava output.[1] Although the Laki eruption in 1783 had the largest eruption of lava in the last 500 years‚ the Eldgjá eruption of 934 AD and other Holocene eruptions were even larger. |
Free Volcano
Analyse the factors that cause differences in the hazards posed by volcanoes around the world (40 marks) Your main factors can be put into two simple categories. Human and physical. From there you can then further explore the factors. In my essay I will mainly focus on viscosity‚ location‚ settlement and perception and explore how the physical and human factors intertwine with each other through one simple idea that physical factors dictate the hazard while human factors exacerbate the hazard. From
Premium Volcano Plate tectonics Basalt
Volcanoes on a destructive plate margin often lie dormant for years but have explosive and violent eruptions with acidic lava‚ pyroclastic flows and copious amounts of ash. Because of the length of time that they lie dormant prediction isn’t as easy. Montserrat in the Caribbean experienced a violent eruption in the mid 1990’s. The early activity showed signs of a major eruption
Premium Volcano Hazard Earth
Washington. Which is 50 miles northeast of Portland‚ Oregon‚ and the Cascade Range of the Pacific Northwest. This volcano is a composite volcano. The volcano Mount St. Helens is also known as a strato volcano. It is constructed by alternating layers of lava‚ ash‚ and other volcanic debris. They also tend to erupt explosively and pose considerable danger to nearby life and property. In the year 1980 there was an eruption. Before the time of the eruption there was 5.1 magnitude earthquake. Which probably
Premium
moor‚ among others. Sill: A tabular sheet intrusion where magma has intruded between older layers of sedimentary rock‚ beds of volcanic lava or tuff‚ or even along the direction of foliation in metamorphic rock. Good examples are the Salisbury crags in Edinburgh‚ which are formed by a sill partially exposed by the ice age. Dyke: Similar to a sill‚ except the lava has intruded along cracks and faults in one particular rock type. It cuts across layers‚ or through one layer or an unlayered rock‚ rather
Premium Igneous rock Lava
constantly moving and may crash into each other or slide or move apart from each other. Continental Plate: Large sections of the surface of the Earth that move separately. Shield Volcano: Volcanoes formed by viscous lava and have broad and flat sides. This happens due to the lava cooling slowly which lets it spread widely before cooling. Magma: Molten or partly molten rock underneath the Earth’s surface. Seismic Activity: Release of energy from the focus of an earthquake that spread outwards
Premium Volcano Pacific Ring of Fire Plate tectonics
After the gigantic shaking of Mount Vesuvius it was calm for a few minutes‚ people were screaming‚ scared to death‚ and curious. Then toxic gas came out of Mount Vesuvius. Pompeii villagers thought it was a friendly mountain. Villagers started choking to death! Tranio and Livia found a safe place from the toxins. But then the gas stopped. Livia and Tranio came out 300 people were still alive about 4‚000‚000 human beings died. They wanted to explore the Mountain because they thought it was calm. Livia
Premium World War II World War I English-language films
underneath the earth ’s upper mantle‚ part of the crust‚ works its way to the surface. At the surface‚ it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt‚ it will get bigger and bigger because the lava that flows over the top produces a new layer of earth. Lava and ash shoot up through the opening‚ and burst over the top or fill the air with lava fragments and ash. There have been around 1500 total calculated volcanos since the first recordings in history. Today
Premium Volcano
even planets that rain gold‚ diamonds‚ and glass; but have you heard of the planet that rains lava and rock? The K2-141 b is a super Earth exoplanet that lives two hundred and two light years away from us. K2-141 b and its sister planet are found in the Aquarius constellation. This particular exoplanet was discovered by the Kepler Space Telescope in 2018‚ after its “Second Light” mission. Since it rains lava‚ you would think that the planet is covered in it. It’s not though; instead it is partially
Premium