1. Draft Energy transfer: hierarchy of knowledge Energy model
How is an expert’s understanding of the subject organised?
Big idea Energy is conserved
Energy is a property that object must have so they can do work. Energy appears to come in different forms and can move between them. What matters is the total quantity which is always constant. This allows us to predict what can or cannot happen, using formula. Useful energy is always lost in an energy transfer. We present energy as a single quantity that exists in different stores. At the microscopic level these reduce to either kinetic energy, potential energy based on the position in a field, or radiation.
Unit concept
Energy model
Unit concept
Heat & temperature
Unit concept
Wasted energy
Sub-concepts
Energy stores, Kinetic energy, gravitational energy
Sub-concepts
Temperature, thermal equilibrium, temperature-time graph
Sub-concepts
Input & output, efficiency
Facts
Other energy stores: thermal (hot), elastic (stretched), electrical (current), chemical (fuel or battery)
Total energy is same before and after
Energy measured in J
Facts
Heat is a movement of energy between objects
Temperature measured in ∘C
Facts
Energy can be useful or wasted
Efficiency = output/input energy x 100
What scientific reasoning, maths, literacy and problem solving skills are developed?
Skill area
Use maths
Use quantitative reasoning to solve word problems
Skill area
Develop models
Use models to make predictions and develop scientific explanations
Skill area
Present evidence
Argue with evidence to support a claim State opinions with enough detail to be clear
Draft
Note: the content is in draft form and may change when published © Mastery Science, 2018

2. I can use my knowledge to
Energy transfer: learning stages & objectives
Decide
Activate
I understand earlier concepts
Acquire
I can make sense of the idea that ..
Apply
In unfamiliar situations, I can use the concept to ..
Analyse
I can use higher order thinking to ..
Energy model
When there is a change, energy is transferred from one store at the start to another at the end
Represent the change in a system using a visual model of energy
Do simple calculations using energy values of food and activities
Justify a claim about the energy transfer of a device, using data
Heat & temperature
States
Energy moves from warmer objects to cooler objects, until both reach the same temperature.
Describe or estimate how much the temperature of an object will change
Make deductions about heat and temperature changes from graphs
Wasted energy
When energy is transferred, some energy is wasted, reducing the useful energy
Determine the amount of useful and wasted energy during a transfer
Draw conclusions using data about energy efficiency
Act
I can use my knowledge to
Devise a food or drink label to show how much exercise is needed to use the energy
Note: the content is in draft form and may change when published © Mastery Science, 2018

3. (AQA Trilogy combined science)
Energy transfer: national curriculum
Which parts of KS3 are covered?
AQA KS3 syllabus: Energy transfer
Which parts of GCSE are covered?
(AQA Trilogy combined science)
Energy transfers
Energy transfers in a system
Wasted energy
Develop models
WS1.2 Use models to make predictions and develop scientific explanations
What resources are there to teach this unit?
Below are some ideas. Visit to see more teaching & assessment resources, including:
Advanced planners with teaching ideas for Acquire
Mastery Practice Books to practise Apply
Diagnostic and summative assessments for Acquire, Apply and Analyse
Teaching
ideas
Act One weight loss idea is to make the quantity of energy in food more meaningful. It can be expressed as how long you would need to exercise for to use the energy. Students can be given energy data per g of food and /minute of exercise, choose activities that are relevant to the target audience.
Note: the content is in draft form and may change when published © Mastery Science, 2018