By Mr Thornton
Electricity
Energy
Types
Active
Potential
Thermal
Nuclear
Chemical
Elastic
Gravitational
Electrical
Kinetic
Light
Sound
WASTE
Anything we burn
Anything we eat
Batteries
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Transfers
Simple Diagrams
Electrical
Light
bulb
Thermal
Light
WASTE
Chemical
Thermal
Kinetic
Sound
Car
This presentation is licensed under a Creative Commons Attribution-Non-Commercial-No Derivative Works 2.0 UK: England & Wales License.
Efficiency
Will ALWAYS be between:
zero and one
0% and 100%
Sankey Diagrams
Sources
Keeping
Warm
Non-Renewable
Renewable
Fossil Fuels
Nuclear Fuels
Coal
Oil
Gas
Uranium
Plutonium
P1 Revision
Distribution
Meeting
Demand
Paying
The Bill
Solar
Convection
Conduction
Radiation
Any hot fluid (liquid or gas)
Faster particles in hotter parts of the fluid
Makes the hot parts less dense
Less dense fluid rises
Colder, denser fluid pushed down
Solids
All particles are vibrating
Hotter particles vibrate more
Vibrations passed to any surrounding particles
Fastest in metals; slowest in glass/plastic/wood etc.
Infrared rays
Similar to light:
Can travel through vacuum
Absorbed/emitted best by dark/matt surfaces
Hydroelectric
Power (H.E.P.)
Wave
Tidal
Geothermal
Wind
Generation
Fuel burnt or breaks down radioactively
Water heated to steam
Steam turns turbine
Turbine turns generator
Generator generates electricity
{
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Fossil + nuclear fuels
Fossil fuels
Nuclear fuels
All energy resources except photovoltaic cells (solar electricity)
National Grid
Image via National Grid
Image via National Grid
Image via National Grid
Image via First Hydro
Image via First Hydro
Image via First Hydro
Huge circuit covering the whole country, carrying electricity from power stations to wherever it's needed
Image via Geograph
Image via Geograph
Image via Geograph
Image via Geograph
Image via eHow
Power station
Step-up
transformer
Pylons, etc.
National Grid
Step-down
transformers
Homes and
workplaces
25,000 V
400,000 V
230 V
N.B. UK mains voltage may be between 220V and 240V, and it's 50Hz A.C.
UK Electricity Use Over A Typical Day
UK Electricity Use Over A Typical Week
Useful energy (or power) OUT
Total energy (or power) IN
รท
Against
For
Concentrated sources
Don't depend on weather
Will run out
Pollution (fossil fuels) or radioactive waste (nuclear fuels)
Carbon dioxide (ALL) - Climate change
Sulphur dioxide (COAL) - Acid rain
For
Against
Won't run out
No pollution/waste
Heat from the Earth's core, due to nuclear reactions taking place there
"Dilute" sources of energy
Some depend on unpredictable weather
Some damage habitats
Some may be considered eyesores
Image via arizona.edu
Image via arizona.edu
Image via The Chinese University of Hong Kong
Image via
directindustry.com
Image via NOAA
Image via thephysicstutor.com
Units of electricity are kilowatt-hours (kWh)
To find out how many units have been used, either:
Subtract the smaller meter reading from the larger one,
or...
Multiply the power of the device in kW (1000's of W) by how many hours it's switched on.
You may also need to multiply the number of units by the cost (in pence) per unit.
