Final answer:
The answer to fill in the blanks are: stratus, nimbostratus, Cirrus, cumulonimbus, hail.
Step-by-step explanation:
The bottoms of stratus clouds typically form at altitudes below 2,000 meters. Dark, low-hanging clouds that tend to block out the sun and may produce precipitation are called nimbostratus clouds.
Cirrus clouds often resemble white, wavy bands or ripples or create patterns of patchy, cottony clouds. A "thunderhead" is another name for a cumulonimbus cloud. Chunks of ice that form as raindrops and are repeatedly dropped and lifted by strong updrafts are known as hail.
Different types of precipitation found in various cloud levels are as follows: Low clouds like stratus can lead to drizzle or light rain. Middle clouds, such as altostratus, may produce light snow or rain depending on the temperature. High clouds, such as cirrus, generally do not produce precipitation that reaches the ground, although they can indicate weather changes that may bring precipitation from lower cloud formations.