Dams

• Dams trap water along rivers.

• The water turns a turbine which makes electricity.

• The water is then released through a hole in the dam.

Advantages

• Dams don’t make very much pollution.

Advantages

• doesn't cost much money after the dam has been built.

Advantages• Works well in places with lots of water.

Advantages

• When dams are made it can improve landscape or leisure.

Disadvantages

• The lake created by a dam takes up lots of space.

• Some people think they spoil the landscape.

• The lake can flood farmland.

Disadvantages

• Costs a lot to build.• For example, the Three Gorges Dam in China cost

US$100 billion.

Disadvantages

• The water can be diverted to another place.• There is a big problem when two countries

share a river

                                                                                                                                                                      

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Disadvantages

• Dams can cause dirty water and pollution. • In tropical places this can cause disease.