| Term | Definition |
|---|
| Hydro-what it is | Dam traps water in lake (used in lakes/reservoirs). Water flow turns turbine-turbines turn generators-electrical power |
| Hydro-advantages | 1) once built, virtually free 2) no waste or pollution 3) reliable 4) electricity generated constantly |
| hydro-disadvantages | 1) expensive to build but cost can be shared 2) will flood large area upstream 3) location difficult 4) water quality can be affected |
| hydro-other info | is renewable |
| Solar-what it is | converts sunlight into electricity-solar cells, water heating and furnaces |
| solar-advantages | 1) no waste or pollution 2) can be used in remote areas |
| solar-disadvantages | 1) doesn't work at night 2) very expensive to build 3) unreliable if not in very sunny climate |
| solar-other info | is renewable |
| nuclear-what it is | reactor uses uranium rods, nuclear fission-creates heat heat water to make steam-steam turns turbines-turbines turn generators-electrical power |
| nuclear-advantages | 1) not expensive to make 2) no greenhouse gases 3) huge amount of energy for small amount of fuel 4)produces small amount of waste 5) reliable |
| nuclear-disadvantages | 1) waste very, very dangerous 2) lots of money spent on safety 3) potential major disaster |
| nuclear-other info | not renewable |
| biomass-what it is | burn waste for fuel heat water to make steam-steam turns turbines-turbines turn generators-electrical power |
| biomass-advantages | 1) uses waste where it can 2) fuel tends to be cheap 3) less demand on earth's resources |
| biomass-disadvantages | 1) collecting wate in huge quantities is difficult 2) makes greenhouse gases 3) some waste not available all year round |
| biomass-other info | is renewable |
| wind-what it is | wind blows propeller propeller turns blade-blade turns generator-electrical power |
| wind-advantages | 1) no greenhouse gases 2) free once built 3) land still available and can farm beneath 4) tourist attraction 5) remote areas |
| wind-disadvantages | 1) not predictable 2) very expensive to build 3) ugly and can be noisy 4) kills birds and affects TV |
| wind-other info | is renewable |
| tidal/wave-what it is | use dam with tunnels that funnel water-where sea meets river ebb and flow of tides turns turbine-turbines turn generators-electrical power |
| tidal/wave-advantages | 1) no greenhouse gases or need for fuel 2) can be used in remote areas 3) reliable 4) once built, free 5) predictable |
| tidal/wave-disadvantages | 1) very expensive to build 2) can kill wildlife in area 3) provides energy for about 10 hours |
| tidal/wave-other info | is renewable |
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