Explain how a metamorphic rock could turn into a sedimentary rock - then over time turn back into a metamorphic rock

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.