Rewnebale energy resources, like wind, solar and geothermal resources, 09/04/21

will not run out,they don't generate as much electricity as non-renewable though.

wind power- lots of little wind turbines

this involves putting lots of wind turbines up in exposed like on moors or coasts.
each turbine has a generator, the rotating blades turn the genterator and produce electricity.
theres no pollution( except for a little bit when they're manufactured).
you need about 1500 wind turbines to replace ne coal-fired power station and 1500 of them, cover a lot of ground- which would have a big effect on the scenery.
very noisy
problems of the turbines stopping en the wind stops or if the wind is too strong, and its impossible to increase supply when thers extra demand. on average wind turbines sproduce 70-8% of the time .
the initial costs are quite high, but there are no fuel costs and minimal running costs

solar cells- expensive but no environmental damage

solar cells generate electric currents directly from the sunlight. solar cells are often the best source of energy to charge batteries in calculators and watches which dont use much electricity.
solar pannel are often used in remote places where there's not much choice. it can power electric road signs and satalites.
theres no pollution
solar power is very reliable in sunny countries but only in the day time.solar power can still be cost-effective even in cloudy countries like britian.
you cant increase the power output when ther is extra demand.
initial costs are high but after the energy is free and running costs almost nil.
solar cells are usually used to generate electricity on a relatively small scale.

geothermal power- energy in underground ermal energy stores

this is possible in volcanic area or where hot rocks lie quite near to the surface. the source of much of the energy is the slow decay of various radioactive elements, including ranium, deep inside the earth.
brilliant free energy that's reliable and does very little damage to the environment.
geothermal power can be used to generate electricitity , or to heat buildings directly.
the main drawbacks with geothermal power are that ther aren't very many suitable locations for power plants and the cost of uilding a power plant is very high ompared to the amount of energy produces.

	Creado por It’s Zam hace más de 3 años

formula for wave period

transverse and lonitudinal waves