Subduction zones. Subduction zones form when a continental plate is colliding with an oceanic plate. Subduction zones also form when two oceanic plates collide. The continental crust is lighter because of the quartz and feldspar minerals in granite.Iron and magnesium are much heavier minerals found in ocean floor basalt. When the two plates meet the oceanic crustal plate always subducts beneath the continental plate.The subducting oceanic plate bends and plunges beneath the lighter continental plate until it melts. When two oceanic plates meet and form a subduction zone the heavier and denser of two oceanic plates subducts.ubduction zones also form when two oceanic plates collide. The continental crust is lighter because of the quartz and feldspar minerals in granite. Iron and magnesium are much heavier minerals found in ocean floor basalt. When the two plates meet the oceanic crustal plate always subducts beneath the continental plate.
A HealthCorps answered. A few things happen to enable our ears to hear: 1  Sound waves enter your ear canal and cause your eardrum to vibrate.  Vibrations cause the fluid in the cochlea to move, stimulating the receptor cells.
Now hear this: Sound. 1  When a sound wave hits the eardrum, the eardrum moves tiny bones â the malleus, incus, and stapes â which subsequently move. 2  This movement is picked up by the mechanoreceptors in the inner ear, which exist on hair cells containing cilia between the end of the semicircular canals and the vestibule.