Generating Electricity - Answers

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P1 – Generating Electricity:  Answers


1.    The fuel is burnt which heats the water, creating steam. This turns the turbines. The turbines turn generators, creating electrical power.

2.    Using Uranium: the nuclear fission makes heat which heats water to make steam. The steam turns turbines which turns generators, creating electrical power.

3.    When neutrons smash into the nucleus of uranium atoms, which split roughly in half and release energy in the form of heat.

4.    Arriving waves cause the water in a chamber to rise and fall. This means the air is forced in and out of a hole in the top of the chamber. A turbine is placed in the hole, which is turned by the air rushing in and out. The turbine turns a generator which produces electricity.

5.    A dam is built to trap water. The water flows through tunnels in the dam which turns turbines which drive generators, producing electricity.

6.    They work the same way as hydro-electric schemes but on a larger scale with a much bigger dam called a ‘barrage’ which is built across a river.

7.    Photoelectric cells which convert light directly into electricity.

8.    Panels containing water which you place on your roof. The sun heats the water which is pumped through the pipes in the panel. The panels are painted black so more heat is absorbed. The water is pumped in at the bottom so that convection helps the flow of hot water out the top.

9.    Hot rocks underground heat water which produces steam. We drill holes down into the hot region; pump down cold water, steam is produced, collected and purified and is used to drive turbines which drive electric generators.

10.    Costs about the same as coal so isn’t expensive to make. Doesn’t produce

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