Objects sink into water until the weight of water displaced is equal to the weight of the object. If the water weight that is displaced is less than the object’s total weight, the object sinks. More »

Objects float better in salt water than in fresh water because salt adds mass to water and makes it denser. This density causes objects to float better on the surface. The denser the water, the easier it is for objects t... More »

The ability of objects to float, or buoyancy, comes from relative densities of the object and the fluid medium, whether it is water, air, or another liquid. When an object is immersed in fluid, it displaces an equivalent... More »

The reason things float or sink in water is due to the object's or material's density. The density of water is 1.0 grams per cubic centimeter at 68 degrees Fahrenheit. Objects that have a lower density than water will fl... More »

Objects comprised of material that is denser than water tend to sink; objects with a lighter density tend to float. Since air is lighter than water, hollow objects can float if their total density is less than water. Pre... More »

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According to Archimedes' principle, buoyant forces are equal to the weight of water an object displaces; therefore, solid objects and watertight hollow vessels displace the greatest amount of water when submerged, maximi... More »

The ability of objects to float, or buoyancy, comes from relative densities of the object and the fluid medium, whether it is water, air, or another liquid. When an object is immersed in fluid, it displaces an equivalent... More »