Geography: Year 9 Term 1: Tectonic Mechanisms 0.0 / 5 ? GeographyNatural hazardsGCSEAQA Created by: Charlotte HerondaleCreated on: 03-12-19 10:31 What causes convection currents? (1) Radioactive activity in the earth‘s core 1 of 6 What are convection currents? (2) Rising and falling of magma in the crust due to density changes 2 of 6 Hot magma deeper does what? (1) Rise 3 of 6 Cool magma nearer the crust does what? (1) Sink 4 of 6 Define ‘slab pull’ (2) Subduction of oceanic place due to it being heavier and pulled down by gravity 5 of 6 Define ‘ridge push’ (2) The pushing apart of plates due to rising magma between them 6 of 6
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