, Q17 : the leading edge of plate A will melt because of the temperature of the mantle., Q18 : Magma, Q19 : Volcanoes, Q20 : Earthquakes, Q21 : Trench, Earthquake, Subduction Process, Volcanoes, Tsunami., Q22 : Volcanoes, Volcanic Island Arc, Q23 : Tsunami, Q24 : Strips of clay buckled upward, Q25 : Mountains, Q26 : Earthquakes, Q27 : Mountains,