Year 10 GCSE (Higher) OCR Gateway Science Suite LIVING FOR THE FUTURE Lessons 1–2 (P2a) 1) Describe how light produces electricity in a photocell. 2) Describe how the power of a photocell depends on light intensity and the surface area exposed. 3) Explain why passive solar heating works. 4) Describe other ways that the Sun’s energy can be harnessed.
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