πŸ›° MISSION BRIEFING Β· CLASSIFIED

The Energy Management Protocol

Energy cannot be created from nothing. It cannot disappear into nothing. Your mission: understand how energy moves between stores through transfer pathways β€” and why every joule is accounted for.

8
Energy Stores
4
Transfer Pathways
∞
Total Energy
βš– THE FIRST LAW OF THERMODYNAMICS
"Energy cannot be created or destroyed β€” only transferred or transformed from one store to another."
πŸ”‹
What is a Store?
A 'container' that holds energy in a particular form β€” like a chemical store in a battery or a gravitational store in an aircraft at altitude.
⚑
What is a Pathway?
The mechanism by which energy moves from one store to another β€” mechanical work, electrical work, heating, or radiation.
πŸ“
The Unit of Energy
Energy is measured in Joules (J). 1 kJ = 1,000 J. A 100W light bulb transfers 100J of energy every second.
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Conservation
In any system, the total energy before = total energy after. Energy 'lost' as heat is never truly lost β€” it's just transferred to the thermal store of the surroundings.

The 8 Energy Stores

Every form of stored energy falls into one of eight categories. Click any card to reveal its secrets, real-world examples, and the formula behind it.

πŸ’‘ SCIENTIST INSIGHT

Stores are often visualised using a Sankey diagram β€” a flow diagram where the width of arrows represents the amount of energy being transferred. Wider arrow = more energy flowing through that pathway.

The 4 Transfer Pathways

Energy doesn't teleport between stores. It travels via four distinct pathways. Identifying the correct pathway is a key exam skill.

βš™οΈ
Mechanical Work
Energy transferred by a force causing movement. This includes pushing, pulling, throwing, and compression. Calculated as: Work = Force Γ— Distance (W = Fd).
Example: A football player in Warrington kicking a ball. The force applied transfers energy from the chemical store (muscles) to the kinetic store (ball).
πŸ”Œ
Electrical Work
Energy transferred by the movement of electric charge around a circuit. The driving force is potential difference (voltage). This pathway is the backbone of modern technology.
Example: A phone charger in a Manchester home β€” electrical energy from the mains (chemical store at the power station) charges the battery's chemical store.
🌑️
Heating
Energy transferred due to a temperature difference. Heat always flows from hotter to cooler objects. Three mechanisms: conduction, convection, and radiation.
Example: A hot mug of tea in Liverpool β€” thermal energy transfers by conduction through the mug into your hands. The temperature difference drives the transfer.
β˜€οΈ
Radiation
Energy transferred by electromagnetic waves β€” including light, infrared, UV, and radio waves. Crucially, this pathway requires no medium; it works through a vacuum.
Example: The Sun transfers nuclear energy to Earth's thermal and light stores via electromagnetic radiation β€” 150 million km through empty space.
⚑ ENERGY TRANSFER β€” WORKED EXAMPLE: ELECTRIC KETTLE
βš—οΈ Chemical Store
(Coal at Power Station)
β†’
Electrical
Work
β†’
πŸ”Œ Electrical Store
(Mains electricity)
↓
Heating pathway (conduction)
🌑️ Thermal Store
(Water in the kettle)
⚠ WASTED ENERGY
Some thermal energy transfers to surrounding air (thermal store of surroundings) β€” but total energy is ALWAYS conserved.

The Conservation Lab

Apply the Law of Conservation of Energy. Select a real-world scenario, set the transfer amount, and observe how energy redistributes across stores. The total must always balance.

⚑ ENERGY BALANCE SIMULATOR
βœ… ENERGY CONSERVED β€” Total: 1000 J
Select Scenario:
TRANSFER CONTROLS
Source Store
Destination Store
Transfer Amount
100 J
β€Ί Simulator initialised. Select a scenario and execute a transfer.

Knowledge Check

5 high-level questions to test your understanding of energy stores, transfers, and conservation. Detailed feedback is provided for every answer.