Water
When it’s hot and humid, water from seas, rives and lakes evaporates. It transforms into invisible gas that rises up into the blue or grey sky. This gas is called vapour.
Water vapour cools in the sky and turns into millions and millions of tiny water droplets. These droplets are so tiny that they don’t fall but stay in the air like dust. Millions and millions of these droplets form clouds.
It’s cold and frosty high up in the sky and the water droplets freeze. They stick to each other like two people in love. When lots of ice droplets stick together they from frozen snowflakes that are too heavy to stay in the sky, so they fall. The air is warmer lower down and snowflakes melt and become rain.
