The bottoms of _______ clouds typically form at altitudes below 2 km. Dark, low-hanging clouds that tend to block out the Sun an
d may produce precipitation are called _______ clouds. _______ often resemble white, wavy bands or ripples or create patterns of patchy, cottony clouds. A "thunderhead" is another name for a(n) _______ cloud. Chunks of ice that form as raindrops are repeatedly dropped and lifted by strong updrafts are known as _______.
6.The precipitation found in low clouds is liquid water droplets. The precipitation found in middle clouds is predominately liquid water droplets with a small amount of ice crystals. The precipitation in high clouds is mostly ice crystals.