Use numbers 1 to 8 to show the stages in the formation of volcano. _________ Melting rocks generate magma. ________ Magma store in a large chamber. _________ Continental and oceanic plates collide. _________ Rock partically melts. _________ Magma finds its way out to the earth's surface. _________ Magma rises. _________ Gas mixes with magma. _________ Edge oceanic plate goes into the mantle.