1. A friend is extolling the virtues of her new geothermal heat pump. It has a COP of 4, so she argues that it uses only one-quarter of the energy a conventional heating system would use. Formulate a more realistic assessment of the heat pump's energy consumption.

2. A member of your national legislature claims that "the answer to all our energy problems lies right beneath our feet" and proposes a crash program of intensive geothermal energy development. Develop an argument either supporting or opposing this program.