a. Describe the causes of volcanic eruption. [2]b. Describe the two types of volcanoes, giving an example of each type. [2]c. Explain the following terms: [3]i Volcanic Coneii Geyseriii Caldera d. Describe the world distribution of volcanoes. [3]
Answers
Answer:
Explanation:
Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.
Composite volcanoes can rise over 8000 feet. Shield volcanoes are low with gently sloping sides and are formed from layers of lava. Eruptions are typically non-explosive. Shield volcanoes produce fast flowing fluid [lava] that can flow for many miles.
olcanoes are distributed all around the world, mostly along the edges of tectonic Plates, although there are intra-plate volcanoes that form from mantle Hotspots.Some volcanic regions, such as Iceland, happen to occur where there is both a hotspot and a plate boundary.One of the famous distributions of volcanoes is the ‘Ring of Fire’ which is the name for the ring of volcanoes circling the Pacific Ocean.
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