There was a weird question that I found (I don't remember where): A large ice cube floats in a cup of water. Several coins are embedded in the ice cube. What happens when the ice cube melts? (a) The water level falls (b) The water level stays the same (c) The water level rises (d) Cannot be determined Ok so for a regular ice cube, the water level would stay the same because Archimede's principle states that "A body wholly or participally immersed in a fluid will be buoyed up by a force = weight of the fluid it displaces." So a smaller volume of water is displaced because the ice cube is less dense. However as it melts, it becomes more dense and has less volume so the water level would be the same. However, here, I thought the coins are even MORE dense and thus should make the water level rise. But the actual answer is that (a) it falls. Why is this?