The diagram below shows the water cycle, which is the continuous movement of water on, above and below the surface of the Earth.

Sample 1:

The picture illustrates the way in which water passes from ocean to air to land during the natural process known as the water cycle.

Three main stages are shown on the diagram. Ocean water evaporates, falls as rain, and eventually runs back into the oceans again.

Beginning at the evaporation stage, we can see that 80% of water vapour in the air comes from the oceans. Heat from the sun causes water to evaporate, and water vapour condenses to form clouds. At the second stage, labelled ‘precipitation’ on the diagram, water falls as rain or snow.

At the third stage in the cycle, rainwater may take various paths. Some of it may fall into lakes or return to the oceans via ‘surface runoff’. Otherwise, rainwater may filter through the ground, reaching the impervious layer of the earth. Salt water intrusion is shown to take place just before groundwater passes into the oceans to complete the cycle.

(Nguồn: Ielts Simon)

Sample 2:

The chart illustrates the circulation of water in nature.

Overall, it is clear that there are three primary stages in this process, beginning with water evaporation and the formation of a cloud. The next step shows the water‘s journey after falling to the ground, and the process ends with saltwater intrusion.

At the first step of the process, water evaporates into the air, as a result of the sun’s heat. It is estimated that 80% of total water vapour is taken from the ocean. Following this, a cloud is formed by the condensation of water vapour.

In the next stage, the heavy clouds cause rain or snow. Water from the precipitation partly pours into the lakes or is absorbed into the ground. The surface runoff, which is made from rainwater, creates the groundwater and then flows back to the ocean without reaching the impervious layer. The final stage of the process is saltwater intrusion, where water from the ocean moves to the freshwater aquifers.

(Nguồn: Ielts Material)