Restless Earth The cards summerise all the key points within this topic from the AQA board 3.0 / 5 based on 1 rating ? GeographyRock landscapes and processesGCSEAll boards Created by: Humeira SheriwalaCreated on: 09-06-12 16:26 Plate Margins Plate margins are action zones Destructive (plates move together) Constructive (plates move apart) Conservative (plates slide past each other) 1 of 11 Volcanoes Shield Volcanoes at constructive margins wide cone, gentle slopes, lava only Composite Volcanoes at destructive plate margins tall, steep, lava and ash, violent eruptions 2 of 11 Effect of Volcanic eruptions Negative during erpution people killed, farmland destroyed Positive after eruption fertile soil, tourism, geothermal power 3 of 11 Responses to a volcanic eruption Immediate - during the eruption people moved out of danger zone Long-term -recovery and development some and unusable development, forced migration 4 of 11 Supervolcanoes Erupt massive volumes of material At least 1000 times more than normal Global effects- dust cooling world climate last eruption- Toba 75,000 years ago 5 of 11 Earthquakes Most at destructive or conservative margins Focus underground where quake occurs Epicentre point above focus on surface Richeter Scale measure the strengh of the earthquake 6 of 11 Effects of earthquakes Primary effects immediate effects Building collapse, people killed/ injured Secondary effects later effects fires, landslides, diseases, tsunamis 7 of 11 Responses immediate responses emergancy/ relief aid needed specialist rescue and medical teams blankets and tents for outdoor sleeping supply of clean water and medicine long-term responses preperation for next earthquake hold drills train rescue teams build earthquake proof buildings 8 of 11 Predicting Volcanoes can be monitored Detect movement/ higher temperatures Known zones with high earthquake risks But earthquakes prediction is immpossible 9 of 11 Fold Mountains formed along destructive plate margins sediments in the sea bed compressed folded up into long, high mountain ranges recent, some still rising e.g. Himalayas 10 of 11 Human uses of the Alps Traditional Farming and Forestery More recent- tourism, winter skiing Summer mountain sceneary and lakes Industry , HEPO for sawmills, metal smelters 11 of 11
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