That is called specific gravity
It's called "specific gravity."
specific gravity
Density
Density
That's the object's density.
Mass/volume or g/mL.
When objects are placed in water, they can sink, float, or stay suspended depending on their density and the density of the water. Objects that are denser than water will sink, objects that are less dense will float, and objects with a similar density may stay suspended in the water.
Objects with low density include foam, cork, and helium gas. Their low density makes them lightweight and buoyant, allowing them to float easily on water. Additionally, low-density objects are often good insulators and have a high strength-to-weight ratio, making them useful in applications where weight is a concern.
DENSITY : density is the ratio of mass and volume of the substance density=mass/volume RELATIVE DENSITY : It is the ratio of density of a substance to the density of water
Objects with more density have a higher mass-to-volume ratio, meaning they have more mass packed into a smaller volume. Examples of objects with high density include lead, gold, and platinum.
Specific gravity is a measure of how dense a substance is compared to the density of water. It is expressed as a unitless ratio and is used to compare the density of different materials.
Objects float in water if they have a density lower than water, while objects sink if they have a density higher than water. Density is a measure of how much mass per unit volume an object has. This is why objects like wood and plastic, which have lower density than water, tend to float, while objects like metal, which have higher density, tend to sink.