Thread (spun yarn)
Spun thread is made by twisting fibres together as they are pulled out. When short fibres are twisted they grip each other and become one long, strong thread. Long ago people spun plant fibre and animal wool by hand with a spindle, and later the spinning wheel appeared. Fibres are natural (from plants: cotton, flax; from animals: wool, silk) or chemical (made in factories). Today factory machines spin thread almost automatically.
You need: cotton wool, dark card, clothing labels (from home). Steps: 1) Pull a piece of cotton wool as long as a pencil. 2) Twist it between your fingers in one direction while slowly pulling with the other hand: a thread forms. 3) Pull your twisted thread and an untwisted wisp from both ends and compare which is stronger. 4) Find labels inside clothes at home that say “cotton”, “wool” or “polyester” and write in a table which are natural. Safety: do not wrap thread tightly round a finger because it can cut off the blood flow; ask an adult to cut thread if needed.