Science A Physics – P1 Science A Physics – P1 Topic 1: Electricity Generation – 2b Topic 1: Electricity Generation – 2b.

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Presentation transcript:

Science A Physics – P1 Science A Physics – P1 Topic 1: Electricity Generation – 2b Topic 1: Electricity Generation – 2b

How a Hydro-Electric Power Station Works Use the animation to find out more about hydro-electric power...

Glen Canyon dam, Arizona,USA Hydro-Electric Power

A hydro-electric power station in New Zealand Hydro-Electric Power

A geothermal power station in Iceland. Geothermal Power

In a few places such as Iceland, the temperature can be sufficient at a depth of only 1km for geothermal power. Super heated steam can be produced at a range of temperatures, i.e. between 175°C and 400°C. This is the hard solid outer part of the Earth. It is made of rock and is between 6 and 70 km thick. At 2 km its temperature can be as high as 250 °C. This is a thick layer of very hot liquid rock called magma. It is about 2,900 km thick and its temperature is about 8,700 °C. Crust Mantle The Source of Geothermal Power

The initial installation costs of geothermal power stations are high, but no fuel is required and the running costs are minimal. Geothermal Power

Water is pumped down to the hot rocks in pipes. The high temperature causes the water to turn into steam, which comes back up to the surface to drive a generator which produces electricity. How a Geothermal Power Station Works

Use the animation to find out more about geothermal power...