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We get electricity from water mainly through hydro-electricity, but also from wave power. A hydro-electric station uses power from rivers, with a dam helping to store water until it is needed. When the water is released, a turbine is driven to create electricity. Dams result in areas of countryside having to be flooded and habitats being lost. At sea, waves force air through an underwater turbine to generate electricity.
This clip is from:
First broadcast:
1 February 2002

Classroom Ideas

This clip could be used to support learning about renewable sources of energy. The clip examines the disadvantages and advantages of hydroelectric power. Having studied the various forms of renewable energy prior to this, pupils should be aware of the many advantages of hydroelectric power. After watching the clip, ask the pupils to note down any negative issues related to hydroelectric power stations. Are there any alternative solutions? Discuss with the children the way in which wave power could be harnessed, pausing the clip to reinforce the way in whcih this new invention works. As a follow up activity, pupils could write to a fictional local council who are considering installing a hydroelectric station, using the facts from the clip to persuade them to consider the alternative solution.