The diagram below shows a process for turning dirty water into clean water.

Dec 27, 2023 / Latest academic task 1 / 8:20 pm

You should spend about 20 minutes on this task.

A simple process of cleansing muddy water is portrayed in the given diagram.

In addition to the filtering materials, the components needed in the process are a bottle which has an open bottom and two glasses.

In step one, the dirty water, which is collected in a glass, is poured into an inversely placed bottle. The bottom of the bottle is cut-open and the filtering materials are arranged in sequence inside it.

On the top layer is the filter paper, which acts as the first layer of the purification process. When muddy water is poured into the bottle, it passes through the paper and permeates through the gravel and small rocks, and then into the fine sand. The final stage of filtration happens in the last layer, which is located at the neck of the open bottle. In this layer, a filter is made of cotton and wool, which allows clean water drop into a clear glass, which is placed under the bottle.