Energy Applications

the potential energy increases

the GPE increases

change in height x mass x GFS (gravitational field strength)

the energy that an object has because of its position

0.5 x mass x speed*2

√kinetic energy / 0.5 x mass

kinetic energy / 0.5 x speed

2/3s

34.9GW

£1.33

energy sources that can be replenished faster than it can be used and doesn’t emit huge amounts of carbon dioxide

energy sources that are used up quicker than they be replenished and emits large amounts of carbon dioxide

fuel that comes from plants (cottonseed, rapeseed etc)

- Geothermal: converting water vapour into energy
pros: cheap, reliable and no pollution
cons: high billing costs and only specific to volcanic areas like Iceland
- Solar: converting sunlight into energy
pros: cheap, reliable and no pollution
cons: only works during the day, doesn’t produce large amounts of electricity
- Hydroelectricity: using water movement to turn turbines and generators
pros: reliable and no pollution
cons: expensive and damages habitats

- Waves: using water movement and air to turn turbines and generators
pros: no pollution
cons: unreliable, noisy, little electricity produced and spoils environment
- Tidal: barrages with turbines
pros: high yield, reliable, low cost
cons: high initial cost, damages environment
Wind: wind powers turbines and turns generator
pros: cheap, no pollution
cons: weather dependent, low yield

nationwide connections of generators that produce and move electricity around the country

1. Power station: where electricity is produced
2. Step-up transformer: steps up voltage to 400,000V to minimise energy lost thermally
3. Pylons: carries electricity to our homes
4. Step-down transformer: reduces voltage to 230V
5. Wires: carries electricity to our homes
6. Home: electricity is used here for appliances

power / current*2