Where do convection currents cause rock to heat up and cool down? Core Mantle Crust

## Step 1<br />Convection currents are a type of heat transfer that occurs in fluids, such as gases and liquids. These currents are caused by the heating and cooling of the fluid, which leads to the fluid's movement.<br /><br />## Step 2<br />In the context of the Earth's structure, these currents occur in the mantle. The mantle is the layer of the Earth that lies between the crust and the core.<br /><br />## Step 3<br />The mantle is composed of semi-solid rock that is capable of flowing slowly. When the mantle is heated, it becomes less dense and rises towards the crust.<br /><br />## Step 4<br />As the mantle cools, it becomes denser and sinks towards the core. This continuous cycle of heating, rising, cooling, and sinking creates convection currents.<br /><br />## Step 5<br />These convection currents play a crucial role in the movement of tectonic plates, which are the large pieces of the Earth's crust that float on the mantle.