GENERAL KNOWLEDGE

Detailed explanation-1: -The Ailsa Craig granite is some of the hardest and purest found in the world and maintains its shape despite the moist, wet conditions of the ice surface curling is played on. Common green Ailsa Craig granite is used to create the body of the Olympic curling stone.

Detailed explanation-2: -Two teams, each with four players, take turns sliding heavy, polished granite stones, also called rocks, across the ice curling sheet toward the house, a circular target marked on the ice.

Detailed explanation-3: -The tight structure of the granite helps to prevent erosion of the curling stone from cold temperatures and from the force of banging into other rocks. The stone is waterproof which prevents small bits of ice seeping into the stone and creating cracks when it refreezes and expands.