Question 1. Many renewable energy sources are intermittent. What does this mean, and why does it pose a challenge to the use of these sources for electrical power generation?
Question 1. In theory, biofuel combustion releases CO2 but does not contribute to global warming. Why is this so?
Question 1. What region of the United States produces the greatest amount of hydroelectricity? Why?
Question 2. What two factors limit the widespread use of geothermal energy?
Question 2. What is vampire power? Give examples of this kind of energy use in your home and classroom.