Siesmic and Volcanic Activities

I think the most places with siesmic and volcanic activies are in the eastern parts of Asia and the western part of the America, because due to the covection currents that pulls Asia and America away from the Atlantic side then it must be shrinking on the Pacific side of the world. It's like this because if none of the places contracted while another plate are extracting, then the world will be out of balance and it would cause unsual and catasrophic events to the planet.