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P3: Energy Resources - Coggle Diagram
P3: Energy Resources
3.2 Energy from Wind and Water
wind power uses electrical generator that is attached to a turbine, wind pushes turbine, more wind = more spinning = more electricity generated, unreliable
wave power uses a floating generator that moves up and down by the force of the wave, motion turns generator & makes electricity, needs lots of cables & buildings on coast
hydroelectric is when a body of water is dropped down a big drop that then spins a turbine making electricity
tidal power, traps high tide water then releases it to the sea through turbines making electricity
3.3 Power from the Sun and the Earth
solar energy can heat up cold water in a solar panel to save electricity, expensive but cost nothing to run, lots are needed and lots of sunshine
solar panel tower uses mirrors to reflect the light onto panels to heat up water, steam is piped underground where t spins a turbine
geothermal energy comes from the energy released by radioactive substances deep in the earth, energy transfers to surrounding rock making earth warm, pump cold water in let hot rocks boil water and use steam to spin a turbine
3.4 Energy and the Environment
fossils fuels being burned contribute to the greenhouse effect, they're non-renewable, can also produce sulfur oxide which can cause acid rain
nuclear doesn't produce greenhouse gases, much more energy produced, make radioactive waste, radioactive explosion
renewable never runs out, don't produce greenhouse gases or acid rain, no radioactive waste, cant meet demands, ruin wildlife, takes a lot of space, noisy, unreliable
3.1 Energy Demands
coal, oil, gas power stations burn to heat water, stream then moves a turbine attached to a generator
biofuels (taken from any living organism), methane found in cow manure, sewage, decaying rubbish can be used instead of fossil fuels. it's renewable & carbon neutral
3.5 Big Energy Issues
demand varies throughout the day, demand is met by: using nuclear or coal stations, gas stations, renewable sources
gas stations can reach a variations of demand,