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Human Health and the Environment- Water Quality Investigation
Grade Level:
11
Subject:
University/College
Topic:
Environmental Science: Strand C. Human Health and the
Environment
Objective:
It is sometimes difficult to believe that there are areas throughout Ontario and across Canada that still don't have access potable or drinking water. As a G7 leading nation and a 1st world country, one would thing that one of the United Nations Universal Human Rights such as having access to clean and safe drinking water, would be met. And yet, dozens of Aboriginal communities are still under a "boil water" advisory in their town. This exercise will demonstrate how students can test water quality and potability from local sources.
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Prep:
Adapted from the Science Teachers Association of Ontario:
The three samples of water will be brought to class and their water quality will be tested. In this demonstration temperature, turbidity, and pH level will be used to access the quality of water and whether it would be harmful for humans to intake it and why. To determine the turbidity (how cloudy the water is) of each sample, a light will be shone onto each sample. To determine the pH level of each water sample, pH paper will be inserted into each sample.
Materials:
-pH paper and color chart
-flashlight
-thermometer
-clean beakers
-3 clean, empty, water bottles (with lid)
