What does it mean to sink or float?

Answer 1

To sink or float refers to an object's behavior when placed in a fluid, typically water. An object will float if its density is less than that of the fluid, allowing it to displace enough water to support its weight. Conversely, an object will sink if its density is greater than that of the fluid, causing it to displace insufficient water to remain buoyant. This principle is governed by Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid it displaces.