By participating in the sand activity i learned how certain materials are found in certain shorelines of the earth. i also learned that alot of that has do to with fault lines near the ocean creating ether volcanic eruption or just shifting of plates. With a volcano erupting with in distance of a beach theres a chance that basalt will show up on the shoreline. Another observation i made is that most of the sand found on the earth does not nessesarily consist of magnetite. for example kabath california is more of darker sand because of the basalt compared to brazil which is more of a tan color sand.