BESC chap 20 Exam Questions and Answers Already Passed

BESC chap 20 Exam Questions and Answers Already Passed Which country is currently the world leader in renewable resource? - Answers Denmark Most of our energy waste in North America results from - Answers Technological inefficiency The quickest and easiest way to save money on energy bills is to - Answers modify your energy using behavior Which of the following electric power plant devices has the least net efficient energy - Answers Nuclear energy Energy efficiency is a measure of - Answers energy produced compared to energy consumed How does eating locally grown food in season save energy - Answers locally grown food does not need to be transported far distances The idea of cogeneration is to actively use ____ electricity generating plants - Answers both electricity and waste steam heat from A glass greenhouse on the south side of a building is an example of - Answers passive heat absorption Which of the following solar energy uses has been used by people for thousands of years? - Answers passive heat absorption A system of pipes painted black that have water circulating on the wall in a glass greenhouse on the south side of a building is an example of: - Answers an active solar heating system The most effective technology developed so far to produce solar energy concentrated enough to run an industrial furnace or turbine is to use: - Answers Parabolic mirrors Active solar energy systems involve: - Answers pumps and moving fluids Parabolic mirrors ____ sunlight on a collecting medium - Answers focus intense Recently, the ______ company invested money into a solar cell manufacturing facility. This action is ____. - Answers BP; atypical for a fossil fuel company because they usually block renewable energy Photovoltaic cells work because solar energy striking their surface - Answers releases electrons, causing an electric potential in attached wires Photovoltaic electricity costs are _____ coal or nuclear-powered electricity. - Answers Likely to be cheaper in the near future than Amorphous silicon collectors are currently being used in - Answers .... A drawback of lead-acid batteries being used to store large amounts of energy is - Answers They can store only moderate amounts of energy per unit mass and the acid is corrosive Which of the following is true regarding fuel cell technology - Answers They are only about 40-45% efficient A ____ is used to remove hydrogen from various fuels to be used in fuel cells. - Answers Reformer Which of the following is not normally considered a biomass fuel? - Answers All of these are biomass fuels (Wood, Bark, Waste wood chips, Branches) In the United States and Canada, the most common problem with using wood as a major heat source is - Answers None of these Very few living trees are cut down for fuel in _____ because twigs, branches and crop residues are used for fuel. However, in ______ the forests are nearly gone and even fruit trees cu