Earthquake Key Terms 0.0 / 5 ? GeographyNatural hazardsGCSEAQA Created by: QueenOfPeace2001Created on: 26-06-17 20:56 Natural Hazard An extreme natural event that occurs where there is significant human activity. 1 of 24 Earthquake Tremors in the earth that can have a number of causes. 2 of 24 Crust Thin outer shell of the earth. 3 of 24 Plates Huge slabs of crust that can move. 4 of 24 Plate Boundaries Where different plates meet. 5 of 24 Mantle The thick layer of molten rock between the core and the crust. 6 of 24 Core The centre of the earth, there is an inner and outer core. 7 of 24 Governance The way a country is controlled. 8 of 24 Infrastructure Basic physical and organisational structures and facilities. 9 of 24 Epicentre The point on the earth's surface that is directly above the focus of the earthquake. 10 of 24 Focus The underground point where the earthquake has been caused. 11 of 24 Seismic Waves The energy that travels through the earth with an earthquake. 12 of 24 Primary Effects The immediate, direct consequences of a natural event. 13 of 24 Secondary Effects The later effects of a natural event that follow the primary effects. 14 of 24 Liquifaction When water rises from the ground up to the surface. The tremors of an earthquake make it rise. It causes unstable ground. 15 of 24 HIC High Income Country 16 of 24 LIC Low Income Country 17 of 24 Aftershocks A small earthquake that follows the main one. 18 of 24 Richter Scale A scale of numbers used to measure the size of an earthquake. 19 of 24 Mercalli Scale A scale used to measure the effects of an earthquake. 20 of 24 Magnitude The size of the earthquake. 21 of 24 NGO Non Governmental Organisation (charity) 22 of 24 Fault Line A break or fracture in the crust that occurs as the plates move. 23 of 24 The 3 Ps Planning, prediction, protection. 24 of 24
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