What cloud is the classic thunderhead?

What cloud is the classic thunderhead?

• A. Cumulus
• B. Cirrus
• C. Cumulonimbus
• D. Stratus

Answer: (C)

Deep convection produces the cloud that becomes a thunderstorm, and the classic thunderhead is cumulonimbus. This cloud forms from strong updrafts that push air upward far into the atmosphere, creating a towering, dense structure. The name reflects its weather: cumulonimbus clouds are capable of heavy rain, thunder, lightning, and sometimes hail or tornadoes. It often starts as a cumulus cloud, a fluffy puff, but as the updrafts continue, it grows vertically into the cumulonimbus cloud with a broad, anvil-shaped top at higher altitudes. Other clouds mentioned are different in appearance and behavior: cumulus are the ordinary fluffy clouds with a flat base and little vertical development; cirrus are thin, wispy high-altitude ice crystals; stratus form low, flat, widespread layers. None of those produce the dramatic thunderhead effects like cumulonimbus.

Deep convection produces the cloud that becomes a thunderstorm, and the classic thunderhead is cumulonimbus. This cloud forms from strong updrafts that push air upward far into the atmosphere, creating a towering, dense structure. The name reflects its weather: cumulonimbus clouds are capable of heavy rain, thunder, lightning, and sometimes hail or tornadoes. It often starts as a cumulus cloud, a fluffy puff, but as the updrafts continue, it grows vertically into the cumulonimbus cloud with a broad, anvil-shaped top at higher altitudes.

Other clouds mentioned are different in appearance and behavior: cumulus are the ordinary fluffy clouds with a flat base and little vertical development; cirrus are thin, wispy high-altitude ice crystals; stratus form low, flat, widespread layers. None of those produce the dramatic thunderhead effects like cumulonimbus.