KS3 Energy Practice Test 2025 - Complete Exam Prep

An energy-efficient appliance is specifically designed to use less energy while performing the same tasks as its less efficient counterparts. This means it operates effectively and provides the same level of service, like washing clothes or cooling a space, but does so without wasting energy. The design of such appliances often incorporates advanced technology or materials that enhance their efficiency, resulting in lower energy consumption.

By utilizing less energy, these appliances can lead to significant cost savings over time on utility bills, and they also promote environmental sustainability by reducing greenhouse gas emissions associated with energy production. The focus on efficiency allows consumers to maintain the same quality of life while using fewer resources.

In contrast, choices that suggest an appliance costs more to use or uses more energy contradict the fundamental principles of energy efficiency. Additionally, the idea that an appliance requires frequent repairs does not relate to its efficiency in energy use; rather, it indicates a lack of reliability, which is not characteristic of energy-efficient appliances.