What is energy efficiency?
Explanation: The correct answer is B) Minimizing energy usage. Energy efficiency refers to using less energy to perform the same tasks or achieving the same level of output with reduced energy consumption. It involves optimizing energy use, reducing waste, and adopting energy-efficient technologies and practices to minimize energy losses and maximize productivity.
Which of the following is an example of an energy-efficient lighting technology?
Explanation: The correct answer is B) Compact fluorescent lamps (CFLs). CFLs are an energy-efficient lighting technology. They use less electricity compared to traditional incandescent bulbs, while providing the same amount of light output. CFLs are more durable and have a longer lifespan, making them an effective energy-saving alternative.
What is the primary benefit of energy-efficient appliances?
Explanation: The correct answer is C) Lower greenhouse gas emissions. Energy-efficient appliances offer the primary benefit of lower greenhouse gas emissions. By using less energy to perform their tasks, energy-efficient appliances reduce the demand for electricity, which, in turn, results in decreased greenhouse gas emissions from power plants. This contributes to mitigating climate change and reducing environmental impact.
What is an example of a behavior-based energy efficiency measure?
Explanation: The correct answer is C) Turning off lights when not in use. Behavior-based energy efficiency measures focus on changing individual and collective energy consumption habits. Turning off lights when not in use is an example of such a measure. It promotes energy savings by avoiding unnecessary electricity consumption. While installing insulation, upgrading windows, and using energy-efficient light bulbs are important energy efficiency measures, they fall under the category of technology-based or structural measures.
What is the concept of "negawatts"?
Explanation: The correct answer is B) Watts of energy saved through energy efficiency. The concept of "negawatts" refers to the units of energy saved through energy efficiency measures. It represents the reduction in energy demand achieved by using energy more efficiently or avoiding unnecessary energy consumption. The term "negawatts" emphasizes the importance of energy conservation and the value of energy saved through efficiency.