Mantle - the layer of the earth between the crust and the core, Outer core - A layer of molten iron and nickel that surrounds the inner core of Earth, Continental drift - The continents were once joined together and have since split and moved apart, Pangaea - The name of the single landmass that broke apart and gave rise to today's continents, Tectonic plates - Sections of the Earth's crust that move due to convection currents., Convection - Circular currents in the mantle caused by the magma being heated by the core of the Earth., Divergent - A plate boundary where two plates move away from each other., Convergent - A plate boundary where two plates move toward each other., Subduction - The process by which oceanic crust sinks beneath continental crust, Normal fault - A crack in the earth's crust due to tension forces, Tremor - Weak vibrations on the surface of the Earth, Epicentre - the point on the Earth's surface directly above the focus of an earthquake, Focus - The point beneath Earth's surface where rock breaks under stress and causes an earthquake, Magnitude - Measure of the energy released during an earthquake, Richter scale - a scale that measures the ground movement that occurs during an earthquake, Volcano - A weak spot in the crust where magma has come to the surface, Conduit - connecting the magma chamber to the vents, Side vent - An opening on the side of a volcano, Magma chamber - the body of molten rock that feeds a volcano, Dormant - A volcano that has not erupted for a long time, but may erupt again one day.,

(Year 9) Plate tectonics glossary

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