1. Convection and the Mantle

2. Convection and the Mantle
There are 3 main types of heat transfer: radiation, conduction, convection

3. Heat Transfer - Radiation
Radiation – transfer of energy through empty space, has no direct contact between the heat source and an object (Ex: sunlight warming Earth’s surface)

4. Heat Transfer - Conduction
Conduction – heat transfer by direct contact of particles of matter (Ex: metal spoon heating up in a pot of hot soup)

5. Heat Transfer - Convection
Convection – transfer of heat by the movement of a heated fluid (includes liquids and gases); Heat transfer is caused by differences in temperature and density within a fluid (Ex: Water on a stove – water heats at the bottom of the pan, becomes less dense and rises; away from the heat source the water cools, becomes more dense and sinks; the process begins again) This is a Convection Current, or flow that transfers heat.
Density – measure of how much mass there is in a volume of a substance

6. Convection and Density

7. Convection
Convection Currents

8. COMPLETE AND PUT THE NEXT GRAPHIC ORGANIZER IN YOUR NOTEBOOK!

9. Convection Currents in the Mantle
The heat source is the Earth’s core and from the mantle itself. These currents have been acting like a conveyor belt moving the lithosphere above for the past four billion years

10. Convection Currents, A to D

11. Convection Currents