Geography 4.0 / 5 based on 2 ratings ? GeographyWater and riversPopulation changeGlacial landscapes and processesStructure of the EarthGCSEAQA Created by: carla_300Created on: 07-03-15 12:48 Where is there a concentration of earthquakes and volcanic activity? In the South West of North America. 1 of 5 Why do plates move? Because of a convection current. 2 of 5 How is a convection current caused? It is caused by Adiabatic cooling. 3 of 5 What is Adiabatic cooling? It's when warm air rises and expands then starts to fall. 4 of 5 What are the 4 layers of the Earth called? The inner core, Outer core, Mantle and the crust. 5 of 5
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