The Water Cycle

The diagram illustrates a natural process on the earth called the water cycle. The whole cycle is divided into five main steps, which starts from oceans and ends at the underground portion of mountains.

The whole process is as follows: In the first step, about 80% of the water vapour is created from oceans through the effect of solar heat. In the second step, water vapour is condensed to form clouds. Next, precipitation becomes rain on the countryside or snow on the top of mountains. Some of the runoff precipitation is gathered in the lakes of valleys, while some runs on the surface of the earth. The "groundwater", which comes from the surface runoff in the forest, etc., is formed in impervious layers. In the last step, groundwater is mixed with salt water, and returns to the oceans. This both completes the process and starts a new cycle. 

Hope this helps!

Water Circle

The diagram illustrates a natural process named the water circle on the earth. The whole circle is divided into 5 main (consecutive) steps, which starts from oceans and ends at a part of mountains under seas.

The whole process goes like this. In the first step, the most water vapour is created from oceans with the effect of solar heat, which contributes 80% of total amount. In the second step, In the next stage, water vapour is condensed to form clouds, before precipitation happens under the clouds. Next, some precipitation becomes snow on the top of mountains and some is gathered in the lakes of valleys, while other runs on the surface of the earth. After this, groundwater is formed on impervious layers, which comes from the surface water in the forest and so on. In the last step, Then, groundwater is intruded mixed by salt water, followed by flowing into oceans.

At this point, the process is completed and then a new process begins.