1. Sources of Energy Bellwork January 3-4 How many different kinds of energy do you use each day? Name the different kinds of energy. How much do you use? How can you measure your use?

2. Bellwork January 5-6 How do active and passive solar heating compare? What is convection? What do you think are the advantages of solar heating? What are the disadvantages?

3. Bellwork January 9-10 How do some solar power plants use mirrors? Why is solar energy called “inexhaustible”? How would you prioritize which energy source should be used to generate electricity?

4. Bellwork January 11-12 What are some examples of fossil fuels? Where must we look for fossil fuels today? Why are fossil fuels classified as nonrenewable resources? Did the swamp plants undergo physical changes or chemical changes to become coal? Why would you select to use coal as an energy source over others?

5. Bellwork January 13-16 Why do plant and animal matter contain energy? What is the source of this energy? Why are the fuels from biomass conversion described as renewable resources? How might improved technology for biomass conversion help farmers? What is your opinion of each household being responsible for their own waste removal?

6. Bellwork January 17-18 What part of the atom provides the energy of nuclear fission? Do you think that atoms of any element could undergo nuclear fission? How would you prove that nuclear fission is a safe alternative to fossil fuels?

7. Bellwork January 19-20 What is a nuclear fusion reaction? Why do nuclear fusion reactions occur only at very high temperatures? Where do nuclear fusion reactions occur? Why is it better that other countries recycle their nuclear material and that the United States does not?

8. Bellwork January 30-31 What is you opinion of nuclear power plants? How does wind relate to solar energy? What are the advantages and disadvantages of using the wind and windmills for energy? Do you think we should build windmills in our community why or why not?

9. Bellwork April 1-2 What are the advantages and disadvantages of hydroelectricity? How does a coal burning power plant use water? Why is the water recycled? Why not take water from a river or stream? What are the advantages and disadvantages of burning fossil fuels for energy?