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.
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.