Tanner Young Al Young 2007-01-25T06:42:15Z 2007-01-25T06:09:08Z 2007-07-11T22:03:36Z UCLA MC EMC 11.5703 11688 15180 120 72 False False Alternative Energy Forms Description Collection methods Storage Uses Pro & contra Future Active Solar Solar energy that directly goes to work. Glass connected to a black surface heats piping that contains water. This warm water can be used in a house. Heat and energy are stored in the warm water. Heat water in homes and other simple uses. It is good on a small scale, but it is very hard to use for derriving electricity on a large level. probably will be incorperated in many home designs in the coming years. Passive Solar Photovotaic cells generate electricity. This is then integrated into the pwer grid. Solar towers, large mirror systems that heat water; Photovoltaic cells, they genereate electricity; Solar ponds, water heaters that depend on gravity; and ocean thermal conversion, where ocean water is heated. Battery or other holding mechanism, like water. Medium scale power production in areas with strong consistant sunlight. It is a cost effective alternative to fossil fuels, but it requires a lot of space to efficiently produce power. It will most likely increase in popularity and usage. Wind Wind blowing turbines or blades to produce an aleectrical current from the rotation. Placement of windmills in strong wind areas, like mountain passes and mountain tops. Like any other energy resource, it can be stored in some temporary location or not at all. Medium scale power production in areas with strong consistant wind. It is good as long as the wind is blowing and there are no birds in the area. It will most likely increase in popularity and usage. Tidal Tidal water flow poering turbines. Building a dam across a bay and controlling the tide to power reversible turbines. Like any other electricity. Small to medium scale electricity production. It is good for the cost, but it is very damaging to the bay's ecology. Will possibly increase in areas where it is the most efficient way to collect electricity. Hydrogen Hydrogen's bond power and reactive properties to produce electricity. Derrived from water and the atmosphere. Fuel cells Automobile power and electricity production. It is a rather ideal solution, but it hasn't caught on totally. It will most likely become to choice mechanism for automobile power. Water Water used to rotate turbines. Water moving over turbines at dams. Resevoirs Medium to high level energy production. Effective, but there are far reaching impacts on local species and habitats from flooding, sedimentation, and river blocking. Will decrease in popularity in the US, but in other nations it might catch on. Biomass Primary Production Material It is cut down and burned. Wood and other biomatter General power and heating It works well in some places, but it pollutes and induces deforestation. Will be a keystone for developing countries in the near future. Geothermal Underground heat or heater water (geohydrothermal) Drilling into the ground and letting the air or steam rise. Hot springs and the like Medium level electricty production It is a decent source of energy, but the implications can be devistating for the surrounding area. Will most likely play a part in the coming years as fossil fuels deplete. 81 600 600 3 7 2 False False