Renewable and non renewable energy Flashcards
name the 6 renewable energy sources
wave power
solar
wind
hydroelectricity
geothermal
tidal power
Pros and Cons of solar energy
Pros: no pollution
Cons: expensive, dependant on weather and time
Pros and Cons of wind energy
Pros: minimal running cost, no pollution
Cons: disturb birds/ sealife, expensive, spoil the view, noisy, unreliable, take up space
Pros and Cons of Goethermal energy
Pros: no pollution, minimal running cost, recycles water, reliable/ doesn’t depend on weather
Cons: expensive to set up, not many suitable places
Pros and cons of hydro electric energy
Pros: reliable, minimal running cost
Cons: flooding damages environment, space- people displaced from land
Pros and Cons of tidal power energy
Pros: no pollution, use as bridge
Cons: blocks boats, expensive
Pros and Cons of wave power energy
Pros: no pollution
Cons: undreliabe- wind tide, disturbs sealife, spoils coastline, takes up space
Pros and Cons of biofuel energy
Pros: mostly reliable
Cons: high cost, releases Co2
Pros and Cons of nuclear power energy
Pros: reliable
Cons: risk of disaster, difficult to dispose of water, expensive
How does solar energy work
When the sun shines onto a solar panel, energy from the sunlight is absorbed by the cells in the panel. This energy creates electrical charges that make electricity
How does wind energy work
Wind turns the propeller like blades of a turbine around a rotor, which spins a generator, which creates electricity.
How does geothermal energy work
cold water is pumped underground, hits the hot rocks and is pumped back up to the surface where it’s turned to steam, the steam spins the turbine which is connected to a generator that produces electricity
How does nuclear power work
water in the core is heated then pumped into tubes inside a heat exchanger, those tubes heat a separate water source to create steam, the core water cycles back to the reactor to be reheated
How does hydroelectric power work
Hydroelectric dams trap water. Allowing it to fall rotates a turbine, which turns a generator.
How does tidal power work
Turbines inside the barrage enable the basin to fill during incoming tides and release through the system during outgoing tides, generating electricity in both directions.
