Take out your Energy Sources chart. Unit 2: Energy Conservation and Transfer Focus: Solar Energy Day 8: 11/28/17 Take out your Energy Sources chart. 2. “Solar” and “Hydrogen Fuel Cells” groups…get ready. ***5th and 6th period – finish biomass- slide with chart and (video)

Discuss Solar Energy and Hydrogen fuel cells Plan for the Day Discuss Solar Energy and Hydrogen fuel cells Chart Brainpop Whatever else we have time for

Homework Worksheet on Solar Energy Test on Energy unit next Tuesday. Study guide due next Tuesday.

Essential Question – Copy on page 41. What are the benefits and disadvantages of solar energy and hydrogen fuel cells?

Let’s hear from the “solar” group.

10. Solar Energy Definition: 11. Photovoltaic cells (solar cells) convert solar energy directly into electrical energy (no turbines and generators) Advantages: Renewable-we won’t run out of sunlight More convenient way to get electricity (no turbines and generators) Using solar power does not create pollution or CO2 Disadvantages: Only about 15% efficient Requires a lot of land and many solar collectors to power a community Storage facilities and backup electricity sources are needed for nights and cloudy days Some areas don’t have the climate needed to make electricity this way. Equipment can be expensive

Let’s watch a Brainpop video about solar energy. Listen for the following: How is an electric current created in a photovoltaic cell? What factors limit the use of solar energy to create electricity? Brainpop-Solar Energy

Let’s hear from the “hydrogen fuel cell” group.

Let’s watch a Brainpop video about hydrogen fuel cells Listen for the following: What is the by-product of hydrogen fuel cells? Why do hydrogen fuel cells NOT produce carbon dioxide and air pollution? What factors limit the use of hydrogen fuel cells? Hydrogen fuel cells

What are some things solar energy and hydrogen fuel cells have in common?

Wrap-up What is the most important thing you learned today? Why is this important to you and your world? Be prepared to share.