1. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 QOD : Please have your HW #27 on your desk for me to collect What is the difference between active solar and passive solar energy collection? Active Solar

2. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Saturday Scholars 9am – noon Mid-morning snack provided Get in permission slips soon!

3. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 = using technology to focus, move, or store solar energy. Remember…? Active solar energy collection

4. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 #3.21 Aim: How does active solar energy collection work?

5. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Active solar energy collection 3 important types…

6. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 1. Solar panels – produce heat 2. Solar cookers – focus sunlight into food and cook it

7. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Power tower in Spain

8. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Photovoltaic cell “photo” = light“volt” = electricity 3. Photovoltaic cell – produces electricity

9. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 How do photovoltaic cells work? 2. Electrons are released 3. Moving electrons  electricity! 1. Sunlight hits the array Array = a group of photovoltaic cells

10. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28

11. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Solar Power Challenge! With your group-mates, create a design for a solar- collecting device that will make your ice melt faster than any other group’s. You will be able to use: TODAY = RESEARCH YOUR DESIGN TOMORROW = BUILD FINAL DAY = COMPETION Cardboard Aluminum foil A desk lamp Glue and/or tape Funnel + graduated cylinder (to hold ice and collect melted water)

12. #3.21 Aim: How does active solar energy collection work? Agenda QOD (5) Lesson: active solar (15) Activity: Group challenge ! (15) Summary (5) HW #28 Summary… What’s the difference between a solar panel and a photovoltaic cell?