I showed up to the interview dressed to the nines, post double shot latte, and mentally prepped only to be ushered to a hallway lined with chairs and a dozen other potential applicants already waiting their turn. I knew I needed something to make me stand out if I had any chance of securing the job.
Answer 1: At plate boundaries where sea-floor spreading occurs, magma wells up to fill the space created by the plates that are moving apart. Check out this United States Geologic Survey (USGS) educational animation to see visually how it works:
Ocean Ridges. On divergent boundaries, plates move away from each other, creating a new crust as magma is pushed up from the mantle. The movement of the tectonic plates transports the newly formed crust away from the crest of the ridge in both directions.cean trenches are formed in one of two ways: either through two tectonic plates colliding or through continental land masses colliding with the moving sea floor. This can create a trench on the sea floor side and a mountain range on the side of the land mass, as can be seen with the Andes.