Water purification essay
Name: ____________________________________
Due date: _________________________________
There are 750 million people who lack access to clean water
in the world (that’s 1 in 9 people!). Our life depends on
water and although it is a renewable resource, it is a finite
one. Only about 2.5% of the world’s water supply is fresh
water and most of it is locked up in glaciers and snow cover.
In addition, access to clean water prevents the spread of
diseases such as cholera, dysentry and typhoid fever (1)
In this essay, you will select a country as a case study where
you will describe the scientific methods in which they
process and purify water for safe consumption in order to
supply their citizens with clean drinking water.
Bibliography
1. Morrison, Ian "Billions Affected Daily by Water and Sanitation Crisis." Waterorg. Web. 24 Sept. 2015.
<http://water.org/water-crisis/one-billion-affected/>
Assessment Criterion D
Achievement Level
0
1-2
3-4
5-6
Level descriptor
The student does not reach a standard identified by any of the descriptors
below
The student is able to :
 Attempt to outline how science is applied and used to solve a problem
related to the shortage of fresh water in a country
 Attempt to analyse the consequences of using science and its application to
solve a specific problem interacting with a social, economic, environmental,
political, or ethical factor
 Apply limited scientific language or applies scientific language incorrectly
 Document limited and/or inappropriate sources incompletely or incorrectly
The student is able to:
 Describe how science is applied and used to solve a problem related to the
shortage of fresh water in a country
 Describe and analyse the consequences of using science and its application
to solve a specific problem interacting with a social, economic,
environmental, political, or ethical factor
 Sometimes apply scientific language in a clear and approapriate manner
 Document some sources using MLA style with some errors
The student is able to:
 Describe how science is applied and used to solve a problem related to the
shortage of fresh water in a country
 Discuss and analyse the consequences of using science and its application to
solve a specific problem interacting with a social, economic, environmental,
political, or ethical factor
 Usually apply scientific language in a clear and approapriate manner
 Document many sources using MLA style with few errors
7-8
The student is able to:
 Describe how science is applied and used to solve a problem related to the
shortage of fresh water in a country
 Discuss and analyse the consequences of using science and its application to
solve a specific problem interacting with a social, economic, environmental,
political, or ethical factor
 Consistently apply scientific language in a clear and approapriate manner
 Document many sources completely using MLA style (bibliography)
Introduction:
 In which country will your case study be in?
 What is the problem in the country? (Is it too expensive to purify the water? Is their current
system not working properly? What country’s system could the country adopt?)
Scientific Solution:
 What is your scientific solution? Describe in detail how science solves the problem above.
 How does this method of water purification work? (Diagrams may help your explanation)
Evaluation:
 What are the benefits of this method of water purification? Give at least one example. Was this
successful in another country? If so, how successful?
 What are the drawbacks of this method of water purfication? Give at least one example.
Implications:
 How will the method of water purification you chose affect a social, economic, environment,
social, OR ethical factor in the country? Explain this.
What sources did you use? (Bibliography)
1.
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