(05.01, 05.06 HC) Global energy consumption has increased by…
(05.01, 05.06 HC) Global energy consumption has increased by almost 50% since 1970. In the last few decades, we have seen a significant increase in consumption by transitioning economies. According to International Energy Agency (IEA) via the World Bank, China’s per capita use has grown by nearly 250 percent since 2000, India’s by more than 50 percent, and Brazil by 38 percent. The graph below shows the energy use per capita in 2015 (Figure 1): © Our World in Data 2020 Figure 1: Chart shows the annual average per capita energy consumption measured in kilowatt-hours per person per year for the years 1960 to 2015. Use the graph above to answer the questions: Identify one country that shows energy use per capita above 20,000 kWh. Describe one variable that could be contributing to the high energy use of the country identified in (i). Compare the energy use of a country that uses less than 20,000 kWh per capita with the energy use of the country identified in (i). Describe one possible reason for the observed difference in energy use. There are many ways energy conservation can reduce a country’s energy use per capita. The table below shows conversion factors for different types of renewable and non-renewable energy. Use the table to answer the questions: Conversion Factors 1 kWh (kilowatt-hour) 3,412 Btu U.S Average Utility Rate $0.12/kWh Using green design features is one way of addressing energy conservation. This includes using energy efficient appliances. Calculate the kilowatt-hour of energy used per year by an average 255-watt washing machine, used three hours a day. Calculate the amount of energy and money saved by using a more efficient 180-watt washing machine instead of a 255-watt washing machine. Based on energy savings, provide reasoning for using more green design features in homes. Describe two methods for conserving energy around a home that could reduce energy use per capita for a household.
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