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A simple device for changing sea water to a drinking water - purifying process. IELTS



sharfina 35 / 21  
Dec 3, 2015   #1
Essay topics: The diagram below shows a simple device for changing sea water to drinking water.
Summarize the information by selecting and reporting the main features, and make comparisons where relevant.


A diagram presents process purifying sea water to be drinking water using a simple method. Overall, it can be obviously seen that, the process use a simple principle of distillation in which two elements are separated each other as effect of heat.

The device, which floats on the surface of sea water, consists of the rubber tub, the drinking water collector, and the plastic container. It can float on the sea water because it has lighter density than the density of sea water. After that, on the bottom side of device, there is a hole in order to collect sea water which will be converted to drinking water.

The successful process ,interestingly, only happen in the morning until afternoon since this equipment using the heat from the sun to operate well. The process begins when the bottom of container is partly filled by sea water. Afterwards, sunlight passes through the dome as well as heating sea water. After that, directly, it evaporates and condenses the wate which is inside the dome. As a result, water flows down into rim of the container and passes the rubber tube into drinking water collector. Suprisingly, the water, which is free-salt, is ready to drink.

To sum up, the diagram shows how the basic equipment can be used to produce clean water in a just few stages.


  • sb_unit_9.png


eddies [Contributor] 25 / 1170  
Dec 3, 2015   #2
A diagram presents process purifying sea water to ...
The ongoing process of how a water purification system works in order to be drinking water is presented in the diagram. Overall, it can be obviously seen that simple steps are used to have purified water. In any case, basic equipment is needed to accomplish the process.

The device, which floats on the surface of sea water, consists of ...
A closer look at the diagram shows that how the rubber tub and plastic container are prepared as part of the device. On the sea water, the device results in flotation as its density is lighter than that of sea water. As seen, sea water converted to drinking water is collected extracted from a hole on the bottom of the device.

NEEDLESS TO SAY, The successful process ,interestingly, only happenS in the morning until afternoon since this equipment using ABSORBS the heat from the sun to operate well. The process begins when the bottom of container is partly filled by sea water. Afterwards, sunlight passes through the dome as well as heating sea water. After that, directly, it evaporates and condenses the wate which AS EVAPORATION AND CONDENSATION are inside the dome. As a result, (A COMMA) water flows down into rim of the container and passes the rubber tube into drinking water collector. Suprisingly, the FREE-SALT water, which is free-salt, is ready to drink.

To sum up, the diagram shows how the basic equipment can be used to produce clean water in a just few stages.
One sentence is not enough to cover your thought. Try not to do this in the real exam. Otherwise, your essay will lack coherence


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