Using the left mouse button, select piece and drag into position. Pressing the right mouse button rotates piece. If you need a hint, press the "V" key to view the whole image. Change the number of pieces: 9 | 24 | 48 | 160.
Fuelled by vigorous convection of air in an unstable atmosphere, the tops of cumulonimbus clouds can easily reach 60,000 feet or higher. Lower levels of cumulonimbus clouds consist mostly of water droplets while at higher elevations, where temperatures are well below 0°F (-18°C), ice crystals dominate. To learn more about clouds go to JetStream - an Online School for Weather.