basalt - a dark coloured volcanic rock, continental drift - slow movement of continents, convection - hot less dense material rises up, replaced by colder material, core - centre of Earth, made of nickel and iron, crust - outermost and thinnest Earth layer, fault - a rock fracture or fracture zone, granite - a light coloured speckled volcanic rock, lava - molten rock erupting from a volcano, magma - molten rock within the Earth, mantle - layer between the crust and the core, plate - large mobile part of Earth's lithosphere, plate tectonics - study of plate movement, interaction and destruction, Ring of Fire - extensive area of volcanic and seismic activity, subduction - one tectonic plate moving beneath another tectonic plate, volcano - vent in Earth’s surface which molten lava, ash, and gases are ejected, Taupo - active geothermal area in NZ, Ruapehu - large active NZ volcano, Whakaari - White Island, NZ, Christchurch - site of earthquake in NZ (2011), Alpine Fault - fault found in South Island, NZ,

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