Geography Key Terms 0.0 / 5 ? GeographyPopulationDevelopmentRivers/WaterTectionicsIGCSEWJEC Created by: 10SandersDCreated on: 25-05-14 17:20 Pyroclastic Flow Composed of ash and rock and can travel up to 200 kmph and be as hot as 2000C. 1 of 41 Lahars Pyroclastic Flow mixed with water and turns into a river of mud. 2 of 41 Volcanic Bombs A lump of rock that explodes from a volcano, lands, and semi-solidifies. 3 of 41 Focus Where the earthquake starts. 4 of 41 Epicentre The point on the ground directly above the focus. 5 of 41 P Waves Longitudinal waves that are the fastest seismic waves and can travel through liquids and solids. 6 of 41 S Waves Transverse waves that can only travel through solids. 7 of 41 R Waves Rolling waves that move up and down and side to side that travel through liquids and solids. 8 of 41 L Waves Travel across the surface and only travel through solids. 9 of 41 Seismometer/Seismograph Recieves and records shockwaves from earthquakes. 10 of 41 Laser Reflector Surveys movement between fault lines. 11 of 41 Strain Meter A taut wire is set up between two plates and will snap under earthquake movements triggering an alarm. 12 of 41 Natural Population Increase Birth Rate - Death Rate 13 of 41 Total Population Increase (Birth Rate - Death Rate) +- Migration 14 of 41 HIV/AIDS HIV - Human Immunodeficiency Virus AIDS - Acquired Immune Deficiency Syndrome 15 of 41 Economic Migrant Move to seek better work oppourtunities. 16 of 41 Forced Migrant Move as they face persecution or death in their own country. 17 of 41 Environmental Migrant Move due to natural disasters or climate change. 18 of 41 Refugee A person who is unable or unwilling to return to their own country due to persecution or forcible displacement. 19 of 41 Asylum Seeker A refugee who formally applies to reside in the country they have arrived in. 20 of 41 Push/Pull Factor The features of a place that repel/attract people to move from/to there. 21 of 41 Brain Drain Loss of the most skilled workers. 22 of 41 Remittances The money sent back by worker to support their families. 23 of 41 Circular Migration Migrants move to an urban area to find work and return due to the harvest, changing economic conditions etc. 24 of 41 Percolation Water soaking downwards through permeable rock. 25 of 41 Infiltration Water soaking downwards into the soil. 26 of 41 Through Flow Water flowing horizontally through soil. 27 of 41 Groundwater Flow Water flowing horizontally though permeable rock. 28 of 41 Corrosion Slightly acidic water dissolves the rock it passes over. 29 of 41 Saltation Pebbles bounce along the river as they can only be carried for a small time. 30 of 41 Solution Rock that has been dissolved is carried as invisible load. 31 of 41 Wetted Perimeter This is where water touches the bed, banks, or large load. 32 of 41 Discharge Amount of water in the river. 33 of 41 Lag Time Delay between maximum rainfall and peak discharge. 34 of 41 Human Development Index GNP per capita, LE, Literacy Rate 35 of 41 Physical Quality of Life Index LE, IMR, Literacy Rate 36 of 41 GDP/GNP Total value of goods and services produced by a country in a year. 37 of 41 Purchasing Power Parity Index The GDP/GNP is converted to reflex the relative purchasing power of each country. 38 of 41 MDG 1 Eradicate extreme hunger and poverty. 39 of 41 MDG 2 Achieve universal primary education. 40 of 41 MDG 3 Promote gender equality. 41 of 41
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