Thunderstorms are powered by rising currents of warm air laden with water vapor, which cools and condenses into clouds, then falls back to Earth as a hard rain.
(Thunderstorms; are powered; by rising currents of warm air laden with water vapor) (water vapor; cools; ) (water vapor; condenses; into clouds) (water vapor; falls; back to Earth; T:condenses into clouds; T:then)
Thunderstorms water vapor water vapor water vapor
are powered cools condenses falls
by rising currents of warm air laden with water vapor
into clouds
back to Earth T:condenses into clouds T:then