地球内部过程 Plate Movements-Accumulating Evidence The Topography of the Sea Floor Juan de Fuca Plate Arabian Plate Pacific Plate hippie Plate ndian-Australian o Q African Pl American Antarctic Plate Direction of plate motion (sawteeth point toward Spreading ndge Transform fault 环境跑顶学 Cneinacntalgcelogu ,率地球内部过程 • Plate Movements-Accumulating Evidence The Topography of the Sea Floor：