30. Skating on ice is possible because A.The surface of ice is smooth B.Ice is cold C.The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water D.The pressure on the ice due to skate raises its melting point
Option C Solution: Skating on ice is possible because the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water.
