Here Are 3 Reasons For What causes a volcano to erupt: 1. Melting causes the eruption 2. Extreme High temperatures 3. Continental plates shift

1. Answering the Big Question:
What causes a volcano to
erupt?
Ever thought of what causes a volcano to erupt? How are they formed? What does a volcano mean even?
Volcanic eruptions are one of the most jaw-dropping natural realities in the world. The main logic behind what
causes a volcano to erupt is the method by which the heat moves beneath the earth’s crust. The transfer of heat
via relocation, the heat is shifted from the interior to the surface. The magma- or molten rock is partially
formed due to the melting of the earth’s mantle or crust.
The magma rises due to the heat-releasing technique, resulting in an eruption in the form of a volcano. The
heat release is the last step in the eruption of a volcano. Volcanoes release, hot steam, ash, gases, and hot rock
liquid called lava. The majority of volcanoes erupt on the edges of tectonic plates, both in the ocean and on
land.
When a volcano happens on land, the tectonic plate moves one below the other. When a volcano occurs in the
ocean, a heavy oceanic plate moves under a thicker continental plate. As this happens the oceanic plate gets
sunk inside the mantle.
Here Are 3 Reasons For What Causes A Volcano To Erupt:

2. 1. Melting causes the eruption
The magma formation happens when the earth’s lower crust and upper mantle begin to melt. A volcano acts as
an opening for the magma and dissolved gases present inside that are discharged. What causes a volcano to
erupt is answered by three predominant: the pressure from the exsolved gases in the magma, intrusion of a new
batch of magma into an already magma-existing chamber, and the ability to float.
2. Extreme High temperatures
The temperatures of the molten magma, the soot, and the smoke coming out of it will cause damage to the
humans’ and animals’ surviving environment. Due to the shift in plates of fissures inside the earth, volcanoes
are caused by these internal disturbances resulting in molten magma. These are the reasons that cause a
volcano to erupt.
3. Continental plates shift
In the study of what causes a volcano to erupt, it is found that the shift that happens at the earth’s crust and
mantle, beneath the surface is the lava with high temperatures. Due to the shift, a gap is formed between the
crust and mantle. A space is available for the magma to rise up and it comes up to the surface of the earth.
Volcanic hazards
While talking about what causes a volcano to erupt, an important point of concern becomes the hazards that it
creates. The main cause is the disturbances in the continental plates, the liquid formation takes place resulting

3. in magma eruption. A volcanic hazard refers to the after-effects that the volcano leaves on the environment and
on mankind. While studying what causes a volcano to erupt, the hazards it creates is also an important
discussion as the effects of volcanic eruptions are huge.
5 Volcanic Hazards As Follows:
1. Emission of gases
Gases of various types can be secreted, by active volcanoes, before or after the eruption. Health hazards due to
these gases are common, they also have the potential to spoil the environment. Gases like carbon dioxide,
sulfur dioxide, hydrogen sulfate, hydrogen chloride, and hydrogen fluoride are emitted, which cause
respiratory issues. Exposure to these gases can cause damage to the skin and eyes.
2. Flood basalts
Flood basalts are rare and not found often when volcanoes erupt. Based on past studies, these have been found
in Deccan traps of India and Siberian traps. The impacts of these eruptions are large, to specify, the impact is
as large as one million square kilometers. The thickness is up to one square kilometer, which impacts the large
release of gas.
3. Pyroclastic flows
These are hot-intensity currents that contain rock debris and gas that flow parallel to the ground at high speeds.
They tend to flow down on sloppy terrains like valleys, hillsides, or any ground that goes downwards. The

4. temperatures of these pyroclastic flows can range from 100 degrees Celsius to 600 degrees Celsius. The speed
is also as fast as 110 kilometers per hour or more when on a slope-type terrain.
4. Lava domes and flows
These flows are of magma secreted out of the volcano. Lives are not endangered by the lava secretion, as it
flows slowly. Due to the slow speed, people can easily exit the spot and be safe. But, the route of the lava flow,
is destroyed by making combinations of crushing, heating, and burials. Emissions of aerosols and volcanic
gases are associated with such eruptions.
5. Landslides and debris avalanche
These cannot be necessarily caused by volcanic eruptions but can be caused by the same. They can be however
triggered by a volcanic activity or dome collapse. In heavy rainfall areas, these things are common. These
landslides tend to travel through valleys and can travel large distances far beyond their areas of source. The
impact of debris avalanches cannot be reduced easily as they occur without any warning signs, even on
dormant volcanoes, and can cause havoc in large areas. The speed with which they travel is too fast, resulting
in creating impossible circumstances to evacuate areas of the paths of debris.
Conclusion
Volcano eruptions are too destructive causing. Along with health hazards, it also possesses elements of causing
harm to nature or the environment we live in. Due to excess pollution and heat, humans can suffer from
problems like respiratory issues, skin infections, and even death, which is the end result. On the environmental
front, excessive air pollution, gas emissions, and, heat in the environment resulting in continuous high

5. temperatures are some of the health hazards. Try to be out of the volcano-prone areas as much as possible. If a
volcano erupts, be out of the vicinity as soon as possible, and help elders and children especially to do so.
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