Teach the water cycle to learners aged 10 to 12. Use clearly labeled arrows for evaporation, condensation and precipitation. End with the question “Are clouds made of water vapor?” and answer that visible clouds contain tiny water droplets or ice crystals, while water vapor is invisible. Avoid implying that every cloud produces rain.

SOURCE MATERIAL
Original science lesson: Liquid water can evaporate from surfaces into water vapor, an invisible gas. As moist air cools, some water vapor condenses into tiny liquid droplets; clouds may contain tiny droplets and ice crystals. Water returns to the ground as precipitation such as rain or snow. Collected water can evaporate again. A cloud is not simply a visible mass of water vapor.

Production requirements: Generate exactly one complete 45-second video, 1920x1080 (16:9), with English voiceover, English captions and quiet background music. Use clear typography, diagrams and simple information graphics; no cinematic characters or filmed presenters. Keep the essential meaning understandable without sound. Generate background music once; if it fails, use silence rather than retrying. Do not create extra versions. Use only the supplied source facts and do not conduct additional research. Do not invent product capabilities, dates, statistics or outcomes. Deliver a finished MP4. This is an authorized public Felo landing-page sample.