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What type of magma is the most powerful when it comes to unleashing very explosive volcanic eruption?
Basaltic
What is an eruption called when the magma is thin runny and contains very little silica?
An eruption with thin, runny magma containing very little silica is called an effusive eruption. This type of eruption usually results in lava flows that can travel long distances from the volcano.
Was mount Aso a quiet or explosive eruption?
There were 4 large eruptions of Mount Aso, from 300,000 BC to 90,000 BC. They were all very powerful, explosive eruptions. The last was the most powerful, probably as powerful as the Santorini eruption of c. 1620 BC, or some 4 times more powerful than that of Krakatoa in 1883.
Do taller volcanoes cause a more powerful eruptions?
Not necessarily. The most powerful eruptions generally come from stratovolcanoes. These can be very tall, but do not have to be. The second most powerful eruption of the Twentieth Century was the 1991 eruption of Mount Pinatubo. This volcano is not nearly as tall as other stratovolcanoes. The most powerful eruptions come from supervolcanoes that often fail to build into any sort of mountain.
How can a volcano eruption affect you if you live 1000 miles from the volcano?
A large volcanic eruption can send gases and clouds of particulates very high in the atmosphere, where they can be carried great distances by the wind, even in some cases for 1000 miles.
How do volcanoes cause destruction?
inside the earth is gases and it gets very hot. this melts the rock and builds up pressure. Eventually it causes a volcanic eruption
What sudden event could change the earths atmosphere?
The eruption of a very large volcano
How the composition of magma determines an eruption's characteristics?
Silica(te) rich magma is usually an explosive eruption. The explosiveness of an eruption depends on - a) Gases trapped within the magma at eruption b) The Silica content c) The fragility of the crater walls and/or the volcanic plug.
How is wild fire made during an volcanic explosion?
During the eruption very hot gases are released, lava, hot rock fragments which in contact with dry vegetation causes fires.
Gas is in the air that are present in very small amounts are called what gases?
Gases present in the air in very small amounts are called trace gases. These include gases such as argon, carbon dioxide, methane, and ozone, which, despite their low concentrations, can have significant environmental and climatic effects. Trace gases play crucial roles in various atmospheric processes, including the greenhouse effect and air quality.
Is during an volcanic eruption particles called lava ranging from very fine dust to pieces weighing several tons are ejected?
They are called fragments, fragments.
How can volcanic eruption be harmful?
they are very very hot!
