The growth of a cloud droplet into a rain drop large enough to fall to Earth in a warm cloud is accomplished primarily through:
A)hygroscopic action.
B)condensation of water vapor.
C)supercooling of water.
D)evaporation of water in the cloud.
E)collision and coalescence.

Question

Quizplus · Accepted Answer

The growth of a cloud droplet into a raindrop large enough to fall to Earth in a warm cloud is primarily accomplished through collision and coalescence, which involves small droplets colliding and sticking together to form larger droplets, eventually forming raindrops. Condensation of water vapor and hygroscopic action can contribute to the growth of cloud droplets, but they are not the primary mechanisms for the growth of raindrops. Supercooling of water and evaporation of water in the cloud are not conducive to raindrop growth as they either prevent or reduce the size of cloud droplets.

The Growth of a Cloud Droplet into a Rain Drop