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9 Cards in this Set
- Front
- Back
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non renewable energy sources |
will run out win day (nuclear fuels and fossil fuels) |
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renewable energy sources |
will never run out (the sun, winds, water waves, hydro electricity, bio-fuel, tides, geothermal) |
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bio mass |
burning living material to release stored chemical energy releases co2 can be smoky and smelly renewable and reliable |
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wind power |
energy from the movement of air the air moves because of huge convection currents in the earths atmosphere uses turbines only worked when wind is blowing unreclaimed and visual pollution low carbon emissions
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wave power |
energy from the bobbing movement of the sea caused by wind uses floating devices and various machines extremely diffulcult to capture energy and may affect shipping low co2 emissions |
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tidal power |
energy from the twice daily movement of the sea in and out caused by moon orbiting earth uses huge barrages and turbines to drive out generators very expensive can be predicted accurate but only when the tide is coming in or out |
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hydro electric |
energy from the movement of rain down a steep hill uses a dam to hold the water and then a turbine to drive the generators thus causes flooding and only available in hilly areas also expensive can be used for storage of energy if 2 lakes are available |
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solar cells |
energy directly from the suns rays photovoltaic cells convert light detectly into electricity solar cells are very expensive and only generates when sunny low carbon emissions and low maintenance costs |
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geothermal energy |
energy from the hot rocks. below the earths surface rocks are heated by nuclear reactions in the Earth water is pumped underground which is turned to steam steam drives are turbine which drives a generator Rocks that are hot enough on a volcanic areas low carbon emissions |
