Convectional Currents

Question 1

Where does it occur

Answer 1

Mantle

Question 2

Description

Answer 2

-Move heat from interior of earth to surface
-As semi-molten rock in mantle heats, it becomes less dense and rises
-As it reaches crust, it spreads out carrying plates with it
-As semi-molten rock cools, it sinks back down to be re-heated