© SciFest - www.scifest.ie
Physical Sciences Category 16. What’s the Best Colour and Fabric to Wear in the Summer? Traditionally light/pastel-coloured fabrics have been used to make summer clothing but in recent years black has become very popular, worn in both winter and summer even though everybody knows that wearing dark coloured clothing on a hot sunny day makes you feel warmer. But maybe there’s a plus side to wearing dark colours in the summer? Black and more vivid colours are said to provide greater protection against the sun’s ultraviolet radiation (UVR). What’s also interesting is that some synthetic fibres such as polyester and nylon are said to provide more protection than bleached cottons. Have you ever wondered if there is a ‘safest’ colour or type of fabric to wear to protect yourself from UV radiation? You might like to: • Design an experiment to investigate which colour fabric provides the most protection against UV radiation • Design an experiment to investigate which fabric provides the most protection against UV radiation. (Natural vs manmade fabrics, shiny vs matte fabrics, light sheer fabric such as silk vs heavy cotton denim • Find out if washing a material in detergent makes it less able to prevent UV radiation from passing through N.B. Ultraviolet-sensitive plastic beads can be used to detect UV radiation. The beads are generally white but turn colours when exposed to UV radiation.
Further links: https://www.cancer.ie/reduce-your-risk/sunsmart/skincancer?gclid=EAIaIQobChMIoammguqx4wIVR7TtCh35AQQzEAAYASAAEgIuC_D_BwE#sthash.vcJ yYMwx.dpbs https://www.skincancer.org/prevention/sun-protection/clothing/protection https://www.sciencefocus.com/future-technology/nanope-the-material-of-the-future-keeping-you-cool/ https://www.stevespanglerscience.com/lab/experiments/uv-reactive-beads/
17. What is the Best Shampoo for Your Hair Type? There are so many different types of shampoo on the market that it is often difficult to choose which is best for your hair type. On the shelves of any supermarket or pharmacy you will find shampoos for dry hair, greasy hair, coloured or damaged hair, anti-dandruff shampoos, baby shampoos, shampoos with built-in conditioner, etc. The price also varies. Some brands are expensive whilst others cost very little. Have you ever wondered if there is a big difference between the brands and, if there is, what makes them different?
Page 13 of 40
