Renewable energy
- Created by: emews
- Created on: 15-11-17 17:33
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- Renewable energy
- Wind energy
- Wind is produced as a result of giant convection currents in the Earth's atmosphere, which are driven by heat energy from the Sun.
- kinetic energy in wind is a renewable energy resource
- Advantages
- Wind is a renewable energy resource and there are no fuel costs.
- No harmful polluting gases are produced.
- Disadvantages
- Wind farms are noisy and may spoil the view for people living near them.
- The amount of electricity generated depends on the strength of the wind.
- If there is no wind, there is no electricity.
- Water energy
- Wave
- The water in the sea rises and falls because of waves on the surface. Wave machines use the kinetic energy in this movement to drive electricity generators.
- Tides
- The barrage contains electricity generators, which are driven by the water rushing through tubes in the barrage.
- Like tidal barrages, hydroelectric power (HEP) stations use the kinetic energy in moving water.
- Advantages
- Water power in its various forms is a renewable energy resource and there are no fuel costs.
- No harmful polluting gases are produced.
- Tidal barrages and hydroelectric power stations are very reliable and can be easily switched on.
- Disadvantages
- It has been difficult to scale up the designs for wave machines to produce large amounts of electricity.
- Tidal barrages destroy the habitat of estuary species, including wading birds.
- Hydroelectricity dams flood farmland and push people from their homes.
- The rotting vegetation underwater releases methane, which is a greenhouse gas.
- Wave
- Wind energy
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