Activity 1. REVEAL MEI Direction: Arrange the jumbled letters to reveal the word/s in every over item Clues are provided. 1. DIM COEAN DGRIE - is a seafloor mountain system formed by plate tectonics. 2. FROOLSAE PRESAINGD- the formation of new areas of oceanic crust, which occurs through the upwelling of magma at mid-ocean ridges. 3. OCNEAIC TSURC- the relatively thin part of the earth's crust which underlies the ocean basins. Ocean 4. GAMMA- a semi-fluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling. pagma 5. GAMENCIT TRSIPNIG- is a pattern of magnetic fields in strips of rock as the radiate outward from an ocean ridge.