CBSE Class 6 Answered

(a) Once there was a shepherd, named Magnes, who used to take his herd of sheep and goats to the near-by mountains for grazing. He would take a stick with him to control his herd. The stick had a small piece of iron attached at one end. One day he was surprised to find that he had to pull hard to free his stick from a rock on the mountainside. It seemed as if the stick was being attracted by the rock. The rock was a natural magnet and it attracted the iron tip of the shepherd's stick. This how natural magnets were discovered.

(b) Plastic, fabric, leather and wood.