1. Putting it together You know that our Earth is separated into moving plates You know that the continents are drifting and colliding BUT HOW?

2. Convection Currents Cold air sinks, and hot air rises

4. Convection Currents Cold air sinks, and hot air rises 1)Hot magma rises and cold magma sinks 2)This causes a spinning current Strong enough to move the lithosphere 3)Heating and cooling the rock causes these movements

7. Ways the Plates Move 1.Ridge push – plate moves into the asthenosphere because of gravity at a mid-ocean ridge 2.Convection currents – hot magma rises, while cooler magma sinks 3.Slab pull – oceanic crust is more dense and pulls the rest of the plate with it