physics
Ice encroaches on a wetland pond under gray December skies.
Water’s maximum density is achieved at near 40 degrees F and it is less dense when warmer or cooler. For this reason, ice in water bodies forms from the surface down, rather than the bottom up, with immense consequence for aquatic life, the integrity of aquatic ecosystems, waterfowl, ice skaters, and cubes of ice in a glass.
physics
Ice encroaches on a wetland pond under gray December skies.
Water’s maximum density is achieved at near 40 degrees F and it is less dense when warmer or cooler. For this reason, ice in water bodies forms from the surface down, rather than the bottom up, with immense consequence for aquatic life, the integrity of aquatic ecosystems, waterfowl, ice skaters, and cubes of ice in a glass.