Volcanic Behavior And Results:
What are volcanic rocks?
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Volcanic rocks (volcanics) is a rock formed by magma that has erupted from a volcano. They are usually fine-grained or glassy in texture. They often contain pieces of other rocks and phenocrysts. They were created during fractional crystallization of magma before extrusion. In other words, this is a rock from volcanic origins.
How do volcanic eruptions effect the environment (air, plants, animals, land)?
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Volcanic eruptions greatly influence the environment around them. Mount St. Helens provides an example. The Washington Department of Game estimated that 11,000 hares, 6,000 deer, 5,200 elk, 1,400 coyotes, 300 bobcats, 200 black bears, and 15 mountain lions died from the pyroclastic flows of the 1980 eruption.The impact of eruptions on insects depends on the size of the eruption and the stage of growth of the insect. For example, ash can be very abrasive to wings. Some of these eruptions danger our environment. This is why it is helpful to be able to predict them.
Can you predict when a volcano is going to erupt? If so, how?
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You can predict volcanic eruptions by detecting a particular type of tremor in the ground. Scientists also try to predict these eruptions by understanding their patterns. These "long period events" were signs that pressure was building up inside the volcano. Volcanic eruptions are detected in a similar way as earthquakes. To predict earthquakes scientists use the richter scale to measure the vibrations in the ground. They can also look at the rocks around them, which tells the scientists how violent eruptions may have been in the past. There are many ways to predict volcanic eruptions so that we can prepare to keep our environment safer.
What types of eruptions are most dangerous for villages or cities nearby?
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There are three different main types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that pushes it forward. Phreatomagmatic eruptions are another type of volcanic eruption, driven by the compression of gas within magma, the direct opposite of the process powering magmatic activity. The last eruptive metatype is the phreatic eruption, which is driven by the superheating of steam through contact with magma; these eruptive types often exhibit no magmatic release, instead causing the creation of existing rock.