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UV radiation and its effects on the body

Encouraging Discussion Skills in Science Marjorie Smith Biology Teacher, Dollar Academy Development Officer at SSERC. UV radiation and its effects on the body. UV radiation and its effects on the body. You have done the practical now what about a discussion?.

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UV radiation and its effects on the body

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  1. EncouragingDiscussion Skills in ScienceMarjorie SmithBiology Teacher, Dollar AcademyDevelopment Officer at SSERC

  2. UV radiation and its effects on the body

  3. UV radiation and its effects on the body You have done the practical now what about a discussion?

  4. UV radiation and its effects on the body Related CfE outcomes: • By exploring radiations beyond the visible, I can describe a selected application, discussing the advantages and limitations • I have carried out research into novel materials and can begin to explain the scientific basis of their properties and discuss the possible impacts they may have on society. • I have explored the structure and function of sensory organs to develop my understanding of body actions in response to outside conditions • I have explored the role of technology in monitoring health and improving the quality of life • Having selected scientific themes of topical interest, I can critically analyse the issues, and use relevant information to develop an informed argument

  5. SciencesPrinciples and practice • making informed personal decisions and choices • expressing opinions and showing respect for others’ views • developing informed social, moral and ethical views of scientific, economic and environmental issues • being able to read and understand essential points from sources of information including media reports • discussing and debating scientific ideas and issues

  6. Four parts to activity • Background information cards • Set of statement cards/ or DIY cards • Holiday appartment book • Postcard to ‘self’

  7. Ultraviolet (UV) light is radiation with a wavelength shorter than that of visible light so you cannot see it UV radiation • UV light is found in sunlight and it can cause chemical reactions, and causes many substances to glow or fluoresce • Most people are aware of the effects of UV through the painful condition of sunburn • The Sun emits ultraviolet radiation but the Earth's atmosphere blocks UV radiation from penetrating through the atmosphere by 98.7% • A positive effect of UV exposure is that it helps the production of vitamin D which is needed to prevent bone diseases • Too much UV radiation leads to direct DNA damage and sunburn and this can lead to skin cancer.

  8. A sun tan is a darkening of the skin in response to exposure to ultraviolet radiation from sunshine (or a sunbed)- the darkening is caused by a pigment known as melanin If you have too much exposure to the sun you will get sunburn and possibly skin cancer. If you are fair skinned this is much more likely to happen Suntans, sunbeds and sunscreens • Like the sun, sunbeds give out harmful UV rays which damage the DNA in our skin cells and can cause skin cancer • Using a sunbed once a month or more, can increase your risk of skin cancer by more than half • The sun and sunbeds also cause premature skin ageing, which means that your skin becomes coarse, leathery and wrinkled at a younger age • Sunscreens can prevent the direct DNA damage which causes sunburn - most products contain an SPF rating to show how well they block the UV rays.

  9. Other resources • http://publications.cancerresearchuk.org/epages/crukstore.sf/en_GB/?ObjectPath=/Shops/crukstore/Categories/BrowseByCampaign/SunSmart • Pete Cole article

  10. Skin type

  11. Sun index

  12. Statement cards To develop a group activity which aims to encourage the pupils to discuss what they know about this topic and what they think the most important messages are. • Use the set of statements which the pupils would have to decide if they are correct or not and then they have to rank the correct ones in order of importance • Get pupils to produce a set of statements themselves, based on their knowledge and what they have learned from the information cards

  13. The holiday visitors book This is a holiday apartment visitors book. The Ferguson family go to the apartment every year.

  14. The holiday visitors book The first page of the book describes the house and the various members of the family including their skin type. It also gives a sun index for different times of year for this location. The house has a sun-bed.

  15. The holiday visitors book Each group of pupils would have the diary and the diary entries would all be different, some would be scene setting and others would be to do with sunbathing tanning etc after each entry, of this type, each group has to give advise to the person writing the entry. So you might have: 5/7/09 - 12/709 Great week of sunshine - wall to wall every day, we were so lucky. Kate managed to have 3hrs in the full sun every day, what a tan she has – she says because she was already tanned before she got here it was ok for her to really go for it.

  16. The postcard • What is your message to yourself about what you have learned in this topic?

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