Physics P1 the sun GCSE

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Physics P1 GCSE

The Sun and Ozone

The sun produces ultraviolet radiation. UV radiation can cause:

premature skin ageing

skin cancer

cataracts in older people

sunburn

Sunscreen is a way of protecting yourself from harmful UV. The higher the factor the longer amount of time you can safely stay out in the sun.

Safe time =Recommended Exposure time x Sunblock factor

People with darker skin can stay out longer in the sun since their skin absorbs more UV radiation so less reaches body tissue underneath

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