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When rock inside the Earth becomes hot enough it melts.This molten rock, or magma, is less dense than the surrounding solid rock. Just as an object that is less dense than water will float on water, the relatively low density of the magma causes it to rise to the surface of the Earth.
If the magma contains water and dissolved gasses, when the magma reaches the surface the water and dissolved gasses will suddenly expand into steam and gas due to a desrease in pressure, causing a violent eruption. This is like shaking a coke can and then popping the tab.
What else can I help you with?
Where are the majority of earthquakes and volcanoes in relation to the plate boundaries?
Most earthquakes occur on plate boundaries such as Japan and Chile and most volcanoes occur in diverging plate boundaries like Dallol and Iceland and the Pacific Ring of Fire like Ecuador and Indonesia
What type of plate boundaries do stratovolcanoes occur?
At constructive plate margins (where two plate slide away from each other) or a destructive plate boundary (where two plates slide together), volcanoes do not occur at a conservative plate margin. Hope this helps
What types of Volcanoes can occur far from any plate boundaries?
Shield volcanoes may occur far from any plate boundaries.
Are Brazil likely to have earthquakes and volcanoes why?
No. This is because it is not near the plate boundaries
Which country is known as country of earthquakes and volcanoes?
Earthquakes and volcanoes are usually found near plate boundaries.
Where are the majority of earthquakes and volcanoes in relation to the plate boundaries?
Most earthquakes occur on plate boundaries such as Japan and Chile and most volcanoes occur in diverging plate boundaries like Dallol and Iceland and the Pacific Ring of Fire like Ecuador and Indonesia
Where are earthquakes and volcanoes found around the world?
Where tectonic plates are converging and diverging with each otherThey are mostly found around the Pacific "Ring of Fire", and more generally on any destructive or contstructive plate boundary.Most occur on destructive plate boundaries. The Pacific 'ring of fire' is an example of a long series of destructive plate margins and most volcanoes and earthquakes on Earth are on it.
Are volcanoes only found on constructive plate boundaries?
No
What volcanoes are found in divergent plate boundaries?
major ones
Why are active volcanoes found in Japan and Indonesia?
Because they are on plate boundaries
What is a fault of a volcano?
A volcano is not a type of fault. Volcanoes can be found at convergent and divergent plate boundaries and away from plate boundaries at hot spots.
How Compare shield volcanoes and composite volcanoes?
Shield Volcanoes - Wide base found at constructive plate margins Composite Volcanoes - Steeper Sides found at Destructive (subduction) margins
What type of fault is a volcano?
A volcano is not a type of fault. Volcanoes can be found at convergent and divergent plate boundaries and away from plate boundaries at hot spots.
What types of tectonic plate boundaries are volcanoes generally found?
Continental and Oceanic plates.
Do volcanoes form on diverging or converging plate boundaries more?
Most are found on converging
What boudaries produces volcanoes?
Convergent boundaries produce volcanoes. Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
What plate boundary is a composite volcano on?
Composite volcanoes most often are found near subduction zones. They can be found at either oceanic-oceanic convergent plate boundaries, oceanic-continental plate boundaries, or continental-continental plate boundaries. They are especially prevalent in the Pacific Ring of Fire. A few composite volcanoes, however, have been found at divergent boundaries and away from plate boundaries at hot spots.
