1) The outside layer of the earth 2) The centre of the earth 3) Convection currents occur here 4) Type of crust that contains ocean 5) Type of crust that contains land 6) Due to high temperatures hot magma rises in the mantle  7) They move causing earthquakes  8) Most earthquakes and volcanoes occur here 9) a mixture of molten rock and semi-molten rock found in the mantle 10) Plates pull away from each other 11) Plates slide past each other 12) one plate is subducted under another 13) a sudden release of energy on the crust 14) the place where the seismic waves originate 15) the location on the surface of the earth, directly above the focus of an earthquake 16) it allows hot lava, ash, and gas to be released 17) measures the amount of energy released by an earthquake 18) instrument that records the motion of the ground during an earthquake 19) a fast moving current of hot gas and volcanic matter  20) a series of waves in a water body caused by the displacement of a large volume of water

Year 8 earthquakes and volcanoes

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