# Physics: Year 9 Term 2: Wind and Water Energy

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How does a wind turbine work? (3)
I) Wind hits the blades II)The blades turn, transferring kinetic energy in the wind to kinetic energy in the blades III) This is used to power a generator, which transfers it into electricity
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How does wave power work? (3)
I) Waves hit a floating generator II) The kinetic energy is transferred to the generator, which moves up and down III) This motion turns the generator, which transfers it into kinetic energy
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Give an upside to wind and wave electricity (1)
They use renewable sources
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Give a downside to wind electricity (1)
They cannot generate electricity when there is little wind
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Give a downside to wave electricity (1)
The supply of electricity is not constant
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How does hydroelectric power work? (4)
I) Water is dammed and trapped behind a structure II) When electricity is needed, this barrage gives way in places III) Water cascades through with kinetic energy IV) This is transferred into electricity by generators in the structure
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## Other cards in this set

### Card 2

#### Front

How does wave power work? (3)

#### Back

I) Waves hit a floating generator II) The kinetic energy is transferred to the generator, which moves up and down III) This motion turns the generator, which transfers it into kinetic energy

### Card 3

#### Front

Give an upside to wind and wave electricity (1)

### Card 4

#### Front

Give a downside to wind electricity (1)

### Card 5

#### Front

Give a downside to wave electricity (1)