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Understanding UV Radiation Absorption and Sun Protection Effectiveness

This article explores the absorption of UV radiation by various substances and addresses common misconceptions regarding sun protection. It concludes that while water does not shield against UV rays, individuals can still suffer sunburn while swimming. Sitting by a south-facing window can result in a quick, fading tan, but olive oil is not a reliable sunscreen as it doesn't protect against harmful radiation. Conversely, 4-aminobenzoic acid shows effectiveness in preventing damage from UV radiation. Understanding these factors can help individuals make informed decisions about sun exposure and protection.

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Understanding UV Radiation Absorption and Sun Protection Effectiveness

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Presentation Transcript

  1. A 2.1 What substances absorb UV radiation ?

  2. 4 5 6 7 8 9 10 11 What are your conclusions concerning : a) whether you can be sunburnt whilst swimming ? Yes – water does not absorb any relevant UV radiation

  3. 4 5 6 7 8 9 10 11 What are your conclusions concerning : b) the chances of getting tanned sitting in a south facing window on a sunny day? Yes – but only a quick fading tan

  4. 4 5 6 7 8 9 10 11 What are your conclusions concerning : c) the use of olive oil as a sunscreen ? Does not protect against the most damaging radiation

  5. 4 5 6 7 8 9 10 11 What are your conclusions concerning : c) the use of 4-aminobenzoicacidas a sunscreen ? Protects against the most damaging radiation

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