Cumulus clouds, low and rain-free, get their name from the Latin word for “heap.” With flat bases and puffy upper surfaces, such clouds appear to bubble into the sky, turning grey at the bottom and brilliant white at the top.
Cumulus clouds, low and rain-free, get their name from the Latin word for “heap.” With flat bases and puffy upper surfaces, such clouds appear to bubble into the sky, turning grey at the bottom and brilliant white at the top.