Where are most of the volcanoes located in relationship to the tectonic plates?
Most volcanoes are near plate boundaries, either at a divergent
boundary or on the overriding plate at a subduction zone.
Volcanoes occur as a rupture on a planet's crust. Earth's volcanoes are generally found where tectonic plates are converging or diverging. For example, the Earth's Mid-Atlantic Ridge has volcanoes that are caused by divergent tectonic plates that are pulling apart; whereas the Pacific Ring of Fire has volcanoes that are caused by convergent tectonic plates that are coming together.
Is there a relationship between the location of earthquake epicenters volcanoes and plate boundaries?
Volcanoes are usually found where tectonic plates are diverging (pulling apart) or converging (coming together). A mid-oceanic ridge (Mid-Atlantic Ridge) has examples of volcanoes caused by divergent tectonic plates that are pulling apart. The Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates that are coming together.
They both happen along the lithosphere (tectonic) plates. For Volcanoes- The Ring of Fire, which is where most of the volcanoes in the world happen, is along tectonic plate boundaries. For Earthquakes- Faults (cracks in the Earth's crust) form above the tectonic plates, and when the two plates of the fault slip, it releases energy, and causes an earthquake to happen.
A Tectonic Hazard is caused where two plates meet, these plates are platforms of rock that move on the convewction currents created by the earths core; they are known as tectonic plates. Tectonic hazards are the most obvious in the form of volcanoes and earthquakes, however they can also be other events that are linked to Earthquakes and volcanoes such as tsunamis.
Volcanoes are mainly on what is called ring of fire - this area is the edge of the tectonic plates on which the crust is moving. The ring of of is the subduction zones of these plates - where one plate is sliding under another. The volcanoes in this area are explosive. Other volcanoes are located over hot spots and rift zones.