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Volcanoes occur when the earth cools off, and releases internal heat and pressure. Magma is a lower density than the surrounding rocks, and this causes it to rise to the surface. As it rises, gas bubbles form in the magma, exerting pressure, causing the magma to erupt out of the surface of the earth.
What else can I help you with?
Where do volcanoes occur the most?
The most volcanoes occur around the Pacific Ocean, in an area called the Ring of Fire.
Are volcanoes in jungles?
volcano can occur any where....
Why do volcanoes occur at conservative plate margins?
after earth
Do volcanoes occur in hot countries?
Volcanoes can occur in hot countries, but they are not exclusive to them. Volcanoes are often found along tectonic plate boundaries where magma from the Earth's mantle can reach the surface. This can happen in both hot and cold regions.
Where do volcanoes occur most frequentley?
Volcanic eruptions occur only in certain places and do not occur randomly. ... Volcanoes occur most frequently at plate boundaries
What seasons do volcanoes occur?
volcanoes can occur in any season
Does regional metamorphism occur under volcanoes?
Yes they do occur under volcanoes
Do volcanoes occur in oceans and earthquakes occur on land?
Earthquakes and volcanoes both occur in land and ocean. =)
Do Hotspot volcanoes occur along subduction zones.?
No, hotspot volcanoes do not occur along subduction zones. They occur when plates pass over mantle hot spots.
Where do volcanoes occur the most?
The most volcanoes occur around the Pacific Ocean, in an area called the Ring of Fire.
Volcanoes and earthquakes are likely to occur?
Yes, they are likely to occur.
Do volcanoes occur randomly over Earth's surface?
Volcanoes do not occur randomly over Earth's surface. They occur along the located mark of plate boundaries.
Where do moderate volcanoes occur?
Hawaii
Can volcanoes occur underwater?
Yes and a great many of the earth's volcanoes are underwater.
What types of Volcanoes can occur far from any plate boundaries?
Shield volcanoes may occur far from any plate boundaries.
Where do valcanos usually occur?
Volcanoes occur on tectonic plate boundaries
Earthquakes and occur at plate boundaries?
Volcanoes
