1. Roadmap PowerPoint Notes and Textbook Assignment Friday: refrigeration and cooling systems Next week we will review before having a test on Chapter 5

2. Heat flows from hot to cold

3. Convection Ovens Convection Ovens use a fan to evenly distribute heat They are named for the convection currents formed by moving air within the oven

4. Convection Ovens

5. Regular oven is cooler further away from element

6. Regular Oven vs. Convection Oven Uniformity of heat distribution

7. Upward Currents Form in Pottery Kilns

8. Upward Currents in Ancient Kilns

9. Ancient Kilns

10. Two Types of Modern Ventilation

11. Different Types of Modern Kilns

12. Sea and Land Breezes https://www.youtube.com/watch?v=ZQV72Yz mjyc https://www.youtube.com/watch?v=ZQV72Yz mjyc Heat makes air less dense and lighter, so hot air rises. When air cools, it becomes denser and falls Textbook page 94-95

13. Sea Breeze and Land Breeze

14. How does the ocean change climate?

15. Oceans Moderate Climate Water can absorb and release heat – Water can take in the air’s heat when it is hot – Water can release heat when the air is cold Oceans prevent nearby land from getting very warm or very cold Why does Vancouver have a warmer winter temperature than Claresholm?

16. Assignment How does thermal energy flow between objects of different temperatures? Page 85 Check Your Understanding # 2, 3 Page 87 Check Your Understanding # 1, 2 Page 91 Check Your Understanding #1, 4 Page 97 Check Your Understanding # 1

17. For a candy prize: Who can explain the balloon with air popping and the balloon with water not popping?