FORM 2-PHYSICS-TOPIC 9-SUSTAINABLE ENERGY SOURCES

SUSTAINABLE ENERGY SOURCES

Sustainable energy, specifically renewable energy or green energy, is an energy source which can be replenished, that is essentially inexhaustible. Sustainable sources of energy include solar, wind, water, biomass and geothermal. Non renewable energy sources include coal, oil and natural gas.

Water Energy

Solar Energy

Wind Energy

Sea Wave Energy

Sea Wave as a Source of Energy

Explain sea wave as a source of energy

The concept of sea water:Sea water around the world is continually moving. The wind causes ocean waves as it blows across the sea. These waves are powerful sources of energy. This can be used to drive generators.

The concept of tides:Tides by definition are the rising and falling of the ocean flow. Tides are produced by the gravitational pull of the moon and to some extent the sun. The change of water levels that the tides produce can be used as an energy source.

The concept of wave energy:There are several methods of getting energy from waves.

The occurrence of waves in a swimming pool:Air is blown in and out of the chamber beside the pool; this makes the water bob up and down, causing waves.

The Conversion of Sea Wave Energy to Electric Energy

Explain the conversion of sea wave energy to electric energy

Electricity can also be generated from tides. As tide rises, water is allowed to enter the upper basin in the dam. Once the high tide has passed, the water on the upper basin is made to flow back to the lower basin through turbines in the barrage. The turbine turns generators, which convert seawater into electricity.

Water energy –is the energy obtained from running water by use of turbine and generators

Sea wave energy –Is the energy obtained from the series of swells of sea water.