Assuming that the glass is filled till the same level in both cases i.e., milk and water, they sure will occupy the same volume. Can't be the same with the mass because the variation in density. Mass = Volume × Density. read more
Same glass will hold same volume of milk and water, but the weight will differ because of difference in their composition. Milk contains fat,glucose,protein etc though in minor quantities,water will not have these except dissolved solids,(minerals). So densities of milk and water are different. read more
Glass should holds both milk and water . but it depend on their densities,milk and water have different densities so they have different mass read more
The interesting thing is not that the child assumes the taller glass holds more liquid but that they fail to understand conservation: the fact that the water from one glass is going to be the same amount after being poured into any other container. read more