Geography Flashcards
What is the mantle?
A layer of molten rock
What is subduction?
when the denser crust is dragged down by the lighter crust.
What are convection currents?
Movement of materials due to temperature differences
What is the lithosphere?
The crust and upper mantle
What is the asthenosphere?
The upper later of the earths mantle, but under the lithosphere,this is where convection currents occur
What’s convergent?
Coming together
What’s divergent?
Moving apart
What is the focus?
The centre point where the pressure is released from
What is the epicentre?
The place on earth where the earthquake is directly beneath
What are Seismic waves
How the energy from the earthquake is realised
What is a Ricoirscale
How earthquake size is measured
What is seismometer?
How to measure vibrations caused by volcanos
