6. e. process diagrams. greenhouse gases
TRANSCRIPT
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Writing
WRITING
WRITING TASK 1
You should spend about 20 minutes on this task.
The following diagram shows how greenhouse gases trap energy from the sun.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
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Writing
↓↓↓↓↓You may start your answer from the following line↓↓↓↓↓
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Writing
MODEL ANSWER:
The diagram illustrates the process by which greenhouse gases absorb
heat energy from the Sun. Overall, it is clear that some carbon dioxide and
energy of the Sun are reflected back into the atmosphere, while some is
stored within the Earth.
Energy from the Sun reaches the Earth as heat. Some of this heat energy
is subsequently/then radiated into space, while some of it is trapped by
greenhouse gases in the atmosphere and reflected back to Earth. This is a
natural process, but in recent decades, human activities have led to an
increase in the amounts of greenhouse gases in the atmosphere which is
now trapping too much heat.
One of the main greenhouse gases is carbon dioxide, and extra quantities
of this are released/have been released into the atmosphere as a result of
burning fossil fuels as a source of energy in power stations, factories and
homes. Exhaust gases from cars and lorries result in/have resulted in
further emissions of carbon dioxide.
Plants serve to remove some of the carbon dioxide from the atmosphere
by absorbing it through their leaves. However, as large areas of forest are
(being) felled/have been felled in the Amazon and elsewhere, less carbon
dioxide is removed in this way.
(205 words, Band 9)