Describe and explain the global distribution of earthquakes and volcanoes?

Answer 1

The distribution of volcanoes is worldwide, although they are usually perceived to only occur on Plate Boundaries (PBs). However this is not always the case. Sometimes they can occur on faults or ancient faults like Mount Etna, which is still active because the fault line it used to lie on still provides it with magma. Volcanoes can also be present at hotspots, for example, the volcanic Hawaiian Islands. However the largest and most lethal volcanoes are primarily on PBs, sometimes concentrated in a certain area, like the "Ring of fire" on the borders between the Pacific plate and the surrounding plates. These volcanoes are often due to spreading ridges, causing gaps through which magma flows up. Volcanoes in this area usually follow earthquakes, which are even more frequent there than on faults.

Answer 2

they are distributed near the Coastlines of continents this is because a fraction of the coastline of the continent is on a plate boundary. Plate boundaries shift causing earthquakes and volcanoes.

hope this helped!:)

Answer 3

The patterns of global earthquake distribution is wavelike, that is caused by movement of tectonic plates.