Hold up a ball of clay about the size of a ping pong ball and ask students if they think it will sink or float in water. Place the clay in the water. Do you think that if I use ½-the amount of clay ...

Do Olympic water polo balls float? Balls used in Olympic water polo float, allowing easier ball movement for players. It is made of waterproof material and contains certain textures to allow players ...

See this experiment demonstrated step by step in this video. Watch how carefully the paper clip needs to be placed on the water's surface to achieve the floating effect, and observe what happens when ...