Choose the correct sequence of the steps of a water cycle.
i. Water evaporates from the water reservoirs present on land.
ii. Water exists in the form of water vapour in the atmosphere.
iii. Condensation of water droplets converts them into clouds.
iv. Rainwater again flows into different forms of water reservoirs on land.
v. When the clouds become big and heavy, they fall down as rain.
vi. Water vapours, due to cooling, form droplets using dust particles as nuclei.
The continuous movement of water in which water evaporates then falls on the land as rain and later flows back into the sea via rivers is known as the water cycle.
Water from all the reservoirs present on land evaporate due to heat. Even plants contribute to evaporation by the process of transpiration. It then exists in the form of water vapour in the atmosphere. The water vapours expand and cool as they go up. Due to cooling, they form water droplets around a 'nuclues'. Here any dust particle or particulate matter acts as a nucleus around which water molecules gather and condense to form water droplets. These water droplets further condense and form clouds. When the clouds become large and heavy, the water droplets fall down as rain. All of the water that falls on the land does not immediately flow back into the sea. Some of it seeps into the soil and becomes part of the underground reservoir of fresh water.