Why do clouds float in the sky?
Show answer & explanation
Answer: Rising air keeps them aloft
Wind holds them up — Wrong. Wind moves clouds sideways but doesn't hold them up. Clouds float because tiny water droplets fall so slowly that rising air currents keep them suspended.
Rising air keeps them aloft ✓ — Correct! Cloud droplets are tiny and fall very slowly. But warm air constantly rises from Earth's surface through convection. This upward air movement (updraft) is faster than the droplets' fall speed, keeping them suspended. When droplets grow heavy enough (combining into raindrops), they overcome the updraft and fall as rain!
Static electricity suspends them — Wrong. While clouds contain some electrical charge (creating lightning), static electricity doesn't hold clouds up. Clouds float because rising air currents support tiny, slowly-falling water droplets.
More Weather & Climate questions
- Why can a small shift toward larger hail raise damage so much?
- Why do hail researchers simulate the paths individual hailstones take through a storm instead of just counting how many thunderstorms occur?
- Why does hail reach the ground smaller and less often in the tropics than in mid-latitudes?
- Why can one hailstone have both clear and cloudy ice layers instead of growing in one simple up-and-down path?
- Why is the coldest storm top not the best place for hail to grow?
- Why do supercells make 5-cm hail when ordinary storms usually cannot?