where do earthquakes and volcanoes usually occur? why?
Earthquakes and volcanic eruptions occur due to plate movements. Plates are found under the crust of the Earth. These phenomena occur near plate boundaries. Countries that are on plate boundaries include Japan, Indonesia, Peru, Chile and the western edge of the United States.
Quick Answer. Most volcanoes occur in the basin of the Pacific Ocean, also known as the Ring of Fire. Most volcanoes are situated on the edges of tectonic plates. One of the largest of these tectonic plates, the Pacific plate, is the area around which the majority of volcanoes lie. Continue Reading.