AQA Trilogy GCSE Science Science
Mission Objectives
Identify useful and wasted energy transfers in different appliances
Calculate the efficiency of energy transfers
Explain how to improve the efficiency of a system (H)
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Words and meanings to learn
wasted energy
energy that is not usefully transferred and often spreads out into the surroundings, usually as heat or sound
energy dissipation
the spreading out of energy into the surroundings in a form that is less useful, often as thermal energy, making it difficult to use for further work
efficiency
a measure of how much input energy is usefully transferred by a device or process, given as a percentage
friction
a force that slows down moving objects when two surfaces rub against each other, causing energy to be wasted as heat
useful energy
the energy transferred in a way that helps achieve the device's intended purpose, like light from a bulb or motion from a motor
Samantha is a dedicated and accomplished science educator with over 15 years of leadership experience in the field, coupled with a strong background in scientific analysis. She has a proven track record of strategically managing educational departments, driving operational efficiencies, and nurturing collaborative relationships with stakeholders.
Samantha previously served as the Head of Chemistry and Sixth Form Tutor, Ilkley Grammar School, Ilkley with extensive Key Stage 4 and 5 teaching experience and leadership. In addition to her teaching and leadership roles, she is also an examiner for AQA, providing her with valuable insight into assessment standards and exam specifications.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket, where she's enthusiastically honing her skills both on and off the pitch!
Calculators
Handouts
Expert film
Mission assignment film
