In terms of water density, how does warmer water compare to cooler water?

Water density is influenced by temperature, with warmer water being less dense than cooler water. This occurs because warming a substance generally causes its molecules to move more vigorously, leading to an expansion of the water. As the water expands, the same mass occupies a larger volume, resulting in a decrease in density.

To understand this further, it's important to note that water behaves in a unique manner compared to many other substances. Most substances become denser as they cool, but water reaches its maximum density at around 4 degrees Celsius. Beyond this temperature, as water is heated, it expands rather than becoming denser.

The other options do not accurately describe the relationship between water density and temperature. While some minerals can affect water density, the fundamental physical property of warmer water being less dense remains consistent across natural conditions.