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:
According to this concept, new sea floor rock (basalt) is added to the edges of the North American, South American, Eurasian, and African plates. The result of the addition of new sea floor rock at the Mid-Atlantic Ridge (MAR) is that the Atlantic Ocean between these sets of continents is widening.North and South America move farther away from Eurasia and Africa each year.ccording to this concept, new sea floor rock (basalt) is added to the edges of the North American, South American, Eurasian, and African plates. The result of the addition of new sea floor rock at the Mid-Atlantic Ridge (MAR) is that the Atlantic Ocean between these sets of continents is widening.