how the earth was made notesn a w a i i n1934 a dutchgeophysicist named felix meneses invented thegravimeterhow many he determined the mountains size and it was 140 times thehotspots size of mount everesthelpedcreate they were wondering if hawaii could even be made uphawaii of entirely lavaKilauea could be producing 100 million cubic yards of lavawhen will the per year but there is not much lava flowing across theiiimain island surfacegone or the island until it reaches the ocean where it slowly buildsseparate up over time making it biggerhawaii grows the fastest out of all pieces of land on earthwhen was the at the speed of 20 football feilds a yearinst time hawaii alsogrows in size because of other volcanoes its ahat people volcanic rock hawaii streatches 3 miles down to the sea floordiscovered there is evidence that lava from s volcanoes built the islandhawaii is where it is because the plates are separated byvolcanic structers hawaii had sheild volcanoes which arehow long made of basalt which is formed of liquid islands getgreenerexactly did the more north they are meaning they are oldert take for subduction when tectonic plates colide the heavier platehe main goes down into the hot earth with water then the waterstand of makes magma push through the plate forms volcanoeshawaii to but hawaii volcanoes did not fit the subductiontheoryorm instead of subduction the theory of hot spots came uphot spot a hot reigeon beneath the earth's crusthawaiis islands kept coming up all over the hot spotand more islands were createdof the earth are always movingin 1970 s it was a theory that below the hot spotis a plume of hot rock which rises upthrough theearths interiorscientists called it the phenomenon of a mantle plumegravity readings from 1930 show that the big island is 140 timesbigger than Mt Everest Other investigating show that it isall made from the basalt lava from 5 volcanoes rocks createddeep underground are found within the lava and shows theislands volcanoes are fueled by something within the earthwhich is called a mantle plume underwater lava provesthat a new volcano is brewing