Respuesta :
They occur in the mantle
The heat from the core causes upward convection currents which then split apart near the crust. Since the mantle is molten the crust is essentially floating on it so they move in the direction of the currents
They occur in the mantle
The heat from the core causes upward convection currents which then split apart near the crust. Since the mantle is molten the crust is essentially floating on it so they move in the direction of the currents