Which process releases the energy that eventually produces lightning in a thunderstorm?

A. Water droplets freeze.

B. Water condenses to form clouds.

C. Moisture enters the upper atmosphere.

D. Air pressure decreases, causing rapid air movement.

When warm moist air meets colder drier air, the warm air rises, the water vapor condenses in the air, and forms a cloud. As the water vapor condenses it releases heat, which is a form of energy.

Answer: B. Water condenses to form clouds.

When the moisture condenses, this results in the release of energy. The energy causes the air to be warm and results in the rise of air in the upper atmosphere. This process results in the instability in the atmosphere and cumulonimbus clouds are formed. These clouds support lightening during a thunderstorm.