Graph Writing # 162 - Greenhouse gases trap energy from the Sun

IELTS Academic Writing Task 1/ Graph Writing - Diagram / Pictorial:

» You should spend about 20 minutes on this task.

The following diagram shows how greenhouse gases trap energy from the Sun. Write a report for a university lecturer describing the information shown in the diagram.

Summarise the information by selecting and reporting the main features and make comparisons where relevant.

» Write at least 150 words.

How greenhouse gases trap energy from the Sun

Model Answer 1:
The given diagram explains how sun emitted energy gets trapped in our atmosphere due to the greenhouse effect. It is evident that logging of trees and fossil fuel driven vehicles worsen the greenhouse effect.

Getting back to the details, sunlight that reaches the earth surface creates heats and a large portion of this heat was supposed to radiate back to Space without any hindrance. However, this is not the case and a great proportion of heat energy remains on earth due to different greenhouse gases. Though some sunlight is reflected off our atmosphere for the presence of the white cloud in the sky, a large portion of the heat created by sunlight rays do not leave the surface. Tree logging is a reason for enhanced greenhouse effect as less tree means less absorption of CO2, which is the main gas of greenhouse problem. Another aspect that enhances the average surface temperature by contributing to greenhouse phenomenon is the fossil fuel. This fuel is used to run different water and Highland vehicles and is responsible for the increasing emission of carbon dioxide gas. It is evident that to reduce the average temperature which is basically generated by the greenhouse effect, we need more trees and less use of fossil fuels to drive our cars and ships.             

[Written by Anglo]


Sample Answer 2: 
The diagram illustrates the way in which greenhouse gases are produced and further how these gases trap heat from the sun.

One of the most common way gases are released into the earth’s atmosphere is by means of transport. The engine of a car, plane, motorised boat or other vehicles release toxic substances. The pollutants also meet with extra carbon dioxide, evacuated from power plants or factories which burn fossil fuels, forming a clutter of man-made pollutants. The process is fastened also by the marring deforestation, which logs trees that could have absorbed the man-produced carbon dioxide.

The second stage takes place in the atmosphere, where a part of the energy received from the sun should be reflected back to the outer space. Instead, the greenhouse gases trap the heat, warming up the environment.

Overall, it is easy to notice that pollution itself is a complex process, with roots in the mankind actions.

[ Written by - Gianina C. ]

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Sourojit Roy
The diagram illustrates the various ways in which solar energy gets trapped by greenhouse gases and the causes for the emission of the same.

Overall it is evident that there are many factors which prevent the Sun’s heat to escape back into space. There are several ways of production of carbon dioxide and reduction in the ways of absorption of it.

To begin with, Sun’s rays carrying heat enters the earth from the space. Burning of fossil fuels by automobiles and factories emits carbon dioxide into the atmosphere results in creating the greenhouse effect. Besides, trees absorb carbon dioxide but cutting trees adds to the increase in the gas in the earth’s atmosphere.

A part of the heat is radiated out from the surface into the atmosphere naturally but a portion of it is entrapped in the atmosphere due to the presence of greenhouse gases in it. A small chunk of the heat is also restricted from entering the earth because of the layer of the gases forming a cover.

Nice writing Rajinder. You have clearly depicted/ described the given illustration.
The given diagram illustrates how greenhouse gases entrap the heat from the sun and how deforestation affects our atmosphere.

Overall, human actions like deforestation and use of machines are the main reason for greenhouse effects.

Getting back to the details, the heat created by sunlight that comes to earth should have been released to space in an ideal situation. But in reality, some amount of heat from the sun radiates in the space and some heat is trapped by the greenhouse gases on Earth. In turns, this leads to global warming.

In addition to this, carbon dioxide from the man-made sources like trucks, cars and the harmful gases from the factories mix with the atmosphere. On the other hand, trees which absorbed the carbon dioxide are being cut for human needs and that ultimately leads to more catastrophes to the environment. Thus the human actions and man-made devices are the main reason for greenhouse gases which traps the heats omitted by the sun.