How does tidal energy turn into electricity?

Answer 1

turbines are placed under the sea in areas which have high tidal movement. these turbines are designed to capture the energy produced by the tidal movement and is then transformed into electricity.

The tide moves a huge amount of water twice each day, and harnessing it could provide a great deal of energy - around 20% of Britain's needs.

Although the energy supply is reliable and plentiful, converting it into useful electrical power is not easy.

There are eight main sites around Britain where tidal power stations could usefully be built, including the Severn, Dee, Solway and Humber estuaries. Only around 20 sites in the world have been identified as possible tidal power stations.

A few years ago, "tidal power" meant "tidal barrage".

Answer 2

The coastline has to be suitable, for example a large bay with a narrow outlet to the sea. Some kind of barrage or dam is erected there which will allow the incoming tide to fill the bay. When the tides come in or out the water moves fast through the narrow opening. There you can build a barrage, like a dam, which will allow the water to move in and out. Turbines in the barrage will then spin in the moving water and generate electricity which can be fed into the grid.

Answer 3

First, tides ebb and flow spinning turbines underwater. Since the turbines are on top of a gearbox shaft, it spins fast enough to create electricity. Then the electricity is carried out by cables and into your house

Answer 4

Hi, the tidal power topic is a sub-topic in the GCSE chemistry syllabus as it is all to do with using the earths natural resources. Others include, wind trbines, solar pannels etc. There is no chemistry theory behind tidal power it is just the transfer from kinetic energy to electrical energy.

Answer 5

As the tide rises and falls, there is movement of water.

This movement is harnessed by making it turn an impeller, (or turbine), immersed in the moving water.

The turning of the impeller or turbine blades, is connected to an electric generator by a shaft.

The efficiency is enhanced, by selecting or creating, an area of trapped water, such as in an estuary. The movement of the water can then be forced through a barrage (or dam), creating more power.

There are two tides a day (high water and low water). the height varies over a cycle of about 28 days, caused by the gravitational pull of the moon.

Answer 6

the waves of the tides create such force that scientists have created wave machines, and they put water in these machines to create the force of the waves, and that is how they create the electricity.

Answer 7

Energy cannot be created or destroyed, only changed from one form to another. The moving water of a tide possesses kinetic energy. This can be used to turn the turbines of a power station, which move the generator to produce electricity.

Answer 8

Harnessing water flow to drive turbines and electric generators.

Answer 9

the energy of motion in the waves,which is primarily created by wind can be used to generate electricity.