Geograpy- key points- restless earth

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  • Created by: simran
  • Created on: 15-04-12 17:50

1 -Plate Margins

·         Plate margins are the action zones

·         Destructive (plates move together)

·         Constructive (plates move apart)

·         Conservative (plates slide past each other)

2 -Volcanoes

·         Shield volcanoes at constructive margins

·         Wide cone with gentle slopes, lava only

·         Composite cones at destructive margins

·         Tall, steep, lava and ash, violent eruptions

3 -Effects of volcanic eruptions

·         Negative during eruptions

·         People killed, farmland destroyed

·         Positive after eruptions

·         Fertile

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