Convection currents 0.0 / 5 ? GeographyPlate tectonicsASWJEC Created by: JoHastingsCreated on: 18-04-18 14:18 Heat stage: Heat from the core heats the mantle. 1 of 9 Rising stage: The heated mantle rises towards the crust. Hot mantle cannot easily force through the crust so it is forced sideways. 2 of 9 Cool stage: The mantle cools down. 3 of 9 Sink stage: Mantle sinks back towards the core. 4 of 9 Repeat stage: The mantle cannot pass through the core so it heated and rises. 5 of 9 What does this process form? Convection currents within the magma. 6 of 9 Where does ridge push happen? At spreading centres where plates are moving apart. 7 of 9 Where does slab pull happen? At subduction zones where one plate is pulled down to the mantle. 8 of 9 What is slab pull? The pull of gravity on a plate that is being subducted. 9 of 9
Comments
No comments have yet been made