1. Warm Up Discussion 1. What is heat? 2. How does the heat from the sun reach us on Earth? 3. How does the heater in our classroom heat up the air in the room? 4. Based from the video, how is heat generated in the mantle?

2. How does the Earth heat up? Heat can be transferred in 3 different ways

3. Radiation The transfer of heat as waves and can travel through outer space –how the sun’s heat reaches Earth –microwaves cook by using radiation-- microwave popcorn

4. Convection The transfer of heat by the movement of a liquid or gas (fluid) –Hot air rises (less dense), cold air sinks (more dense) –A hot air popcorn popper uses convection

6. Convection Currents in the Earth

7. Conduction The transfer of heat from one material to another by direct contact –Jiffy Pop uses conduction to pop

8. Heat Transfer Examples

9. Radiation, Convection, & Conduction

10. Animation of Convection in Mantle