How is wind power generated?

Wind power is generated by wind turbines, which have blades that spin due to the wind. This spinning action turns a generator which produces electricity.

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What energy transfer takes place when generating wind power?

As the wind spins the blades, energy from the kinetic energy store of the wind is transferred to the kinetic energy store of the blades. This energy is then converted to electrical energy by the generator.

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How is solar power generated?

Solar power is generated by solar cells or solar panels, which can generate electricity directly from sunlight.

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Give 3 advantages that wind and solar power have in common.

  1. They are renewable.
  2. They are very cheap to run once they have been set up.
  3. They don't do any permanent damage to the environment, or release any pollutants. 

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Give 2 disadvantages that wind and solar power have in common.

  1. They are unreliable (only generate power when the wind blows or sun shines).
  2. They are expensive to set up.

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