On a cold snowy day, you can observe three distinct phases of change: freezing, snow accumulation, and melting.
Freezing: This phase occurs when temperatures drop below 32°F (0°C), causing moisture in the air to freeze. You might see water droplets turning into ice crystals, which often form frost on surfaces like grass, windows, and cars.
Snow Accumulation: Once the temperatures are low enough, precipitation can fall as snow. This occurs when water vapor in the atmosphere condenses into ice crystals instead of rain. You will notice the landscape transforming as snowflakes fall, creating a soft, white blanket over everything. This accumulation can change the way sounds travel through the air and even how light reflects off surfaces.
Melting: As temperatures begin to rise above freezing, the snow starts to melt. This phase changes the snow back into liquid water, resulting in puddles and slush. You may also see icicles forming as the snow melts on rooftops and then refreezes at the edges.
Each of these phases illustrates the beautiful transformation of nature on a cold snowy day, showcasing the interplay between temperature and water in our environment.