Zusammenfassung der Ressource
P2: Sustainable Energy
- Energy Stores
and Transfers
- Energy is
Transferred
Between Stores
- Thermal
- Kinetic
- Gravitational
Potential
- Elastic
- Chemical
- Nuclear
- Electromagnetic
- Electrostatic
- Energy can be
Transferred by
Heating
- Conduction
- The vibrating particles
transfer energy to
close particles.
- Convection
- The energetic particles
move away from hotter
to cooler regions.
- Conservation of
Energy and
power
- Energy can be
transferred and
stored but NOT
created or
destroyed
- Energy
Transferred
Equation
- Energy Transferred (J) = Power (W) x Time (s)
- Efficiency and
Sankey
Diagrams
- Efficiency
Equation
- Efficiency = Useful Energy Transferred /
Total Energy Transferred
- Use the Diagram
to Show
Efficiency
- Energy
Resources
- Renewable
- Never run out
- Most do damage to the environment,
but less than non-renewable
- Don't provide as
much energy
- Main resources:
wind, sun & tides
- Non-Renewable
- Will run out
one day
- Reliable
- Damages the
environment a lot.
- Nuclear waste releases
radiation, makes it dangerous
- Main resources:
fossil & nuclear
fuels
- The National
Grid
- Plugs
Contain 3
Wires
- Live Wire - Carries
the voltage.
- Neutral Wire -
Completes the circuit -
electricity flows in
through the live wire
and out through the
neutral.
- Earth Wire - For safety - Carries the
current away if something goes wrong.