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How can volcanic eruptions lead to earthquakes?
Explosive eruptions can release energy along a fault line. A plus
Which of the following can lead to areas of frequent volcanic eruptions?
The movement of tectonic plates
Are earthquakes the only things that cause volcanic eruptions?
No. Eruptions are caused by magma moving up from the mantle. Earthquakes can be a sign of magma pushing the earth out of its way (causing the earthquake) which lead to the eruptions and potentially tsunamis.
What types of lava will most likely lead to a volcanic eruption of an effusive nature?
Shield volcanoes have effusive eruptions. Effusive eruptions are a volcanic phenomenon; in some ways the opposite of explosive eruptions. An effusive eruption is characterized by an outpouring of low viscosity lava which has a fairly low volatile content. Usually, shield volcanoes have effusive eruptions.
What does volcanic ash do to world temperatures?
Volcanic ash can have a cooling effect on world temperatures. When volcanic eruptions release large amounts of ash into the atmosphere, it can block sunlight and reduce the amount of solar radiation that reaches the Earth's surface. This can lead to a short-term cooling effect known as volcanic winter. However, the exact impact on temperatures depends on the magnitude and duration of the eruption.
How could collision between two seafloor plates produce volcanic activity?
The more dense plate could move under the less dense plate producing magma which can lead to volcanic eruptions
How does explosive volcanic effect the Earth's four spheres get effec?
Explosive volcanic eruptions affect the Earth's spheres by introducing volcanic substances into these spheres. Tons of volcanic gases and water vapor can spread through the atmosphere, lithosphere and hydrosphere. These gases are then inhaled by the organisms in the biosphere, which could lead to health problems.
How can erupting volcanoes lead to global warming and global cooling?
The Scientific term for this is EJECTA. Be they either large or small discharges of ash clouds, their effects can be ambiguous; whether cooling or warming occurs does depend upon a huge number of Variables.
What is an example of a catastrophically formed rock layer?
Mt. Vesuvius is a volcano that erupted on August 24 A.D. 79 blanketing the towns and 1000s of residents of Pompeii, Stabiae, and Herculaneum. Pompeii was buried 10' deep, while Herculaneum was buried under 75' of ash. This volcanic eruption is the first to be described in detail. The letter-writing Pliny the Younger was stationed about 18 miles away in Misenum from which vantage point he could see the eruption and feel the preceding earthquakes. His uncle, the naturalist Pliny the Elder, was in charge of warships in the area, but he turned his fleet to rescuing residents and died. Volcanic ash consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions, less than 2 millimetres (0.079 in) in diameter. There are three mechanisms of volcanic ash formation: gas release under decompression causing magmatic eruptions; thermal contraction from chilling on contact with water causing phreatomagmatic eruptions and ejection of entrained particles during steam eruptions causing phreatic eruptions. The violent nature of volcanic eruptions involving steam results in the magma and solid rock surrounding the vent being torn into particles of clay to sand size. Volcanic ash can lead to breathing problems, malfunctions in machinery, and from more severe eruptions, years of global cooling. Ash deposited on the ground after an eruption is known as ashfall deposit. Significant accumulations of ashfall can lead to the immediate destruction of most of the local ecosystem, as well the collapse of roofs on man-made structures. Over time, ashfall can lead to the creation of fertile soils. Ashfall can also become cemented together to form a solid rock called tuff. Over geologic time the ejection of large quantities of ash can produce an ash cone.
How do asteroid impacts or major volcanic eruptions lead to a decrease in global climate?
Some large events can throw up dust (Sulfur dioxide) that blocks out sun light, cooling the earth under its shadow. Some events can block the sun for days and few can throw up such fine dust in such great numbers that cooling can last for years. Such events are very rare, one every 500 years. When volcanoes throw massive amount of fine dust that can cool the surface, they can also throw out massive amounts of carbon dioxide. The dust last for days until it settles, but the carbon dioxide can last for decades. So the effect is cooling followed by warming.
What fallacies were in the movie The Day After Tomorrow?
The temperature drops about 10° per second. This couldn't actually happen. Also, Global Warming can lead to Global Cooling, but it can't happen as fast as in the movie.
How do volcanoes change the land destructively?
Volcanoes can change the land destructively in several ways. One of the most common ways is through volcanic eruptions, where lava flows and ash deposits can bury and destroy existing landforms. Volcanic eruptions can also lead to the formation of new land through the accumulation of volcanic materials, such as ash and volcanic rock. Additionally, volcanic activity can trigger landslides, mudflows, and lahars, which further modify the landscape in a destructive manner.
