It can be difficult to tell which kinds of fibres have been spun into a yarn or woven into a fabric. Is that yarn wool, cotton or a synthetic? Is that fabric linen or polyester?
At the Marist laboratory, the children in Year 6 are keen to see how a burn test and microscopic observation can help distinguish one kind of fibre from another. They talk about their observations and record them.
How did the swatch react to the flame? Which continued to burn after the flame was removed and which tended to self-extinguish? What was left after burning? And how did the fibres of two different textiles compare at 40x magnification?
Many thanks to Prue who kindly supplied fibre samples for the children to examine.
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