convection currents bru🌍

Earth’s crust

Earth’s crust(top layer) = ❌ solid shell

crust is made of

Crust = made up of thick, connecting pieces called tectonic plates

3 main force driving tectonic plate movement

• slab pull

• ridge push

• convection current

Convection Current

CC = been identified in Earth’s Mantle

Convection Current - how it works

heated mantle material rises from deep inside the mantle, while cooler mantle material sinks, creating convection current

Convection current - what is responsible for

it’s thought that this = largely responsible for movements of plates

Convection current - how it works liquid stuff idfk

warmer, less dense liquid rise upward & cooler liquid fall to take its place. Cycle of liquid or gas rising + falling is called convection current