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CP4: Radiation and Absorption

Investigate how the nature of a surface affects the amount of thermal energy radiated or absorbed

Required PracticalEdexcelGCSE

🔬 Equipment Required

  • Leslie cube (metal cube with different surface finishes)
  • Infrared thermometer or sensor
  • Hot water
  • Thermometer
  • Stopwatch
  • Matt black and shiny silver surfaces
  • Beakers with different surface coatings

🦺 Safety Precautions

  • Hot water can cause scalds - handle carefully
  • Leslie cube gets very hot - use tongs or heat-resistant gloves
  • Allow equipment to cool before handling

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About CP4: Radiation and Absorption

CP4: Radiation and Absorption is a required practical for Edexcel GCSE Physics. This practical investigate how the nature of a surface affects the amount of thermal energy radiated or absorbed

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in Edexcel GCSE Physics exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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