1. What are the two fundamental sources of geothermal energy?
2. Why does a binary geothermal plant require a working fluid other than water?
3. In what sense are most "geothermal" heat pumps not actually geothermal energy sources?
4. Name some environmental impacts of geothermal electric power generation.
5. What was two factors that can lead to depletion of a geothermal resource?
6. Why does the confluence of tidal energy resources and estuaries increase the environmental impact of dambased tidal power plants?
7. What is the ultimate source of the energy that powers a lightbulb whose electricity comes from a tidal power plant?