Generating Electricty Flashcards
3 disadvantages of fossil fuels
Produces carbon dioxide
Non renewable
Produced sulphur dioxide- acid rain
3 advantage of nuclear power
Reliable
Don’t produce carbon dioxide
Good for a steady supply
3 disadvantages of nuclear power
Non renewable
Nuclear waste is highly radioactive
Has to be stored away for thousands of years
3 advantages of geothermal energy
Renewable
No carbon dioxide produced
No fuel cost
3 disadvantages of geothermal energy
Not many suitable places
By drilling you release many hazardous gases
3 advantages of hydro electric power
Very reliable
Provide instant electricity at times of high demand
Doesn’t contribute to global warming
3 disadvantages of hydroelectric power
Costs a lot of money
Takes a long time to build
They flood large areas behind them affects people and wildlife
3 advantages of tidal power
Renewable
Predictable
High power output
3 disadvantages of tidal power
Unreliable - can’t control the tide
Tidal barrages only work when there is a movement of water
Few suitable locations
3 advantages of wave power
Energy is free
Renewable
No global warming
3 disadvantages of wave power
Can’t control the waves
Unreliable
Spoil coastal waves
3 advantages of wind power
Renewable
No global warming
Wind is free energy
3 disadvantages of wave power
Unreliable
Can be noisy
Spoil the view
3 advantages of solar energy
Renewable
No global warming
Free energy
3 disadvantages of solar energy
Unreliable
Can’t use at night
Expensive to make and buy
3 advantages of biomass energy
Renewable
Carbon neutral
Recycling waste
3 disadvantages of biomass energy
Deforestation
Hard to get enough biomass to produce energy
Ethical issue-food for energy not starving people
Quickest start up time
Gas and hydroelectric
Reliable
Fossil
Nuclear
Geothermal
Hydroelectric
Carbon neutral
Biomass
Bad effect in environment
Fossil Nuclear Hydroelectric Solar cells Wind Geothermal
How hydroelectric power is produced
Build a dam across a river The water flows through the dam The water turns turbines Turbines turn generators Electrical power generated
How tidal power is produced
Build a tidal barrage across the mouth of the river Traps water Tide comes in Turns turbines Turbines turn generators Electrical power reduced
How wave power is produced
Incoming waves force air out of the chamber
Waves make water rise and fall in chamber
Water turns turbines
Turbines turn generators
Electric power produced
How geothermal energy is produced
Drill holes into the hot region Send down cold water Steam and hit air rises Steam turns turbines Turbines turn generators Generators make electrical energy
Voltage goes in at
Voltage comes out at
2000v
240v
3 advantages of fossil fuels
A large power output
Power station can be built anywhere
Reliable
