If Yanick is standing at the bottom of a swimming pool wearing a balloon hat, and the pool is gradually filled with water, what happens to the balloon hat as the water level rises? Provide a very brief response.
As the pool fills with water, the water exerts an upward buoyant force on the submerged parts of objects in it. This force increases as the water level rises and more of the object is submerged. Since the balloon hat is filled with air, it is less dense than the water. This density difference will make the balloon experience a stronger buoyant force than the water pushing down on it due to gravity. Therefore, as the water level rises, it will increase the buoyant force on the balloon, causing it to float upwards. The hat will rise with the water level and float on the surface, while Yanick remains submerged. If Yanick is still wearing the hat as the water level passes over his head, the hat will lift off his head and float on the water's surface above him.