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:
A second type of plate boundary is called a divergent boundary, and is a site where two plates are moving away from one another. Examples include the Mid-Atlantic Ridge, a crack in the Atlantic Ocean where molten rock leeches upward, and the boundary between the African and Arabian Plates in the Red Sea.