Cockle Bay is a sun smart school. We decided to test for UV rays as these can harm your skin when you are exposed to them. First, we threaded UV beads onto pipe cleaners, either as a little man or as a bracelet, so we could see the beads easily and they wouldn't get lost. Then we exposed them to the sun. We discovered that they very quickly changed colour. As the beads were sensitive to UV rays, this demonstrated that the UV light was present. Some people, particularly Juwon, have discovered that their own skin changes colour as well . . . to red. When we took the beads back inside, they very quickly turned back to white.
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| We then protected the beads by putting a thick layer of sunscreen on clear film, and placing the UV beads underneath. We discovered that the beads stayed white when we applied this protective layer. This is how wearing a hat and shade clothing, applying sunscreen or playing out to the sun all protect us from harmful rays. |
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The next thing to investigate is to see if UV lights rays can go through our sun shades and the dome roof. Watch this . space!
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