How Are Trenches Formed - Web learn how tectonic plates form trenches and ridges, and how they are related to the ocean floor. Web ocean trenches are steep depressions in the deepest parts of the ocean where old ocean crust is pushed. The web page explains the.
The web page explains the. Web ocean trenches are steep depressions in the deepest parts of the ocean where old ocean crust is pushed. Web learn how tectonic plates form trenches and ridges, and how they are related to the ocean floor.