Are humans to blame for Global warming or is it a natural phenomenon?

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Lopez okhiai                                                                                                                         chemistry case-study


Contents page

  1. Introduction (page 3)

  1. Scientific background (page 4-5)

  1. Arguments for global warming being caused by humanity (page 6)

  1. Arguments for global warming being caused natural phenomenon (page 7)

  1. Conclusion (page 8)

  1. Bibliography (page 9)


Introduction

The question I have chosen to answer is ‘Are humans to blame for Global warming or is it a natural phenomenon?’

I have chosen this question because this question raises numerous arguments that need to be addressed and solved. Global warming is a matter that is featured in my everyday life such as newspapers, books, news, etc. the main issue is the debate on whether global warming is man-made or the cause of a natural phenomenon such as the sunspot theory. In this case study I will be assessing and evaluating the evidence which I have collected in order for me to find out the true cause of the worldwide epidemic that is global warming.

Research that I have done shows that global temperatures are trending upwards. So can assume that global warming is in effect however we have yet to find a definite decision as to who is the cause of global warming. Many people may argue that global warming is an idea theorised by ‘tree-huggers’ but reports have shown evidence that may shed some light on what global-warming actually is and the so-called ‘greenhouse effect’

The illustration above shows the temperatures changes in the world. The areas that go to the right and are going to the darker red displays the increase in temperature in degrees and to the left shows the decrease in your temperature in blue. (2-2-11, 27-01-2009 ) 

Scientific background

Global warming

What is it?

Global warming is the rising average temperature around the world. It also includes the atmosphere and the oceans and may be due to the burning of fossil fuels such as coal, agriculture and industrialisation which are all part of human activities and also by natural observed occurrences.

What causes it?

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Global warming is basically caused when an increased amount of the suns solar radiation is absorbed into the atmosphere, thereby raising the global temperature.

The sun gives off different forms of radiation across the electromagnetic spectrum such as ultra-violet rays or the radiation we can see which visible light is. This solar radiation is emitted across all directions.

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When the radiation comes in contact with the Earth’s atmosphere, part of it would pass right through as it may arrive at the right angle. The other part would be reflected by the earth’s ozone layer. This is to prevent harmful ionising radiation such as UV rays to enter the sun and of the part that successfully passes the earth’s atmosphere; some of the radiation would be ‘absorbed by the Earth’s surface’. This would warm the earth and is vital for life on earth and their processes. However not all the radiation that passes the atmosphere is absorbed by the ...

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