Question

Draw a diagram of water cycle.

Answer 1

When water bodies are heated during the day, a large amount of water evaporates and goes into the air (evaporation). Some amount of water

vapour also gets into the atmosphere because of various biological activities like transpiration. This air also gets heated. The hot air rises up carrying the

water vapour with it. As the air rises, it expands and cools. This cooling causes the water vapour in the air to condense in the form of tiny droplets. This condensation of water is facilitated if some particles could act as the ‘nucleus’ for these drops to form around. Normally dust and other suspended

particles in the air perform this function. Once the water droplets are formed, they grow bigger by the condensation of these water droplets. When the drops have grown big and heavy, they fall down in the form of

rain, snow or hail (precipitation). The water gets collected and joins the water bodies again.

This complete cycle goes on and on and is known as the water cycle.