The document provides instructions for an assignment on issues related to energy changes. Students are asked to write an opinion paper on the issue after reviewing peers' posts and teacher feedback. The paper must thoroughly research and reflect on the issue, include all relevant information and data, and be written in an appropriate scientific style with reliable sources cited using the appropriate referencing style. The document also introduces deep lake water cooling as a new technology that uses large bodies of cold water as a heat sink. It describes how the process works and provides an example of how it could be implemented in Toronto to cool large downtown buildings.

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SCH4U h5, Chemistry, 12, University - Virtual High School (VHS)
Unit Assignment: Issues Related to Energy Changes
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Issues Related to Energy Changes Assignment
After reviewing the issues and opinions
posted by your peers and receiving feedback
from your teacher, write an opinion paper that
will show you have thoroughly researched
and reflected on this issue.

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All information and relevant data are to
be included in a logically sequenced
manner. In your writing, it is important
to use appropriate writing style, tone,
and scientific terminology. Conduct your
research using reliable, peer reviewed
and industry sources and ensure that
sources listed in your reference list are
directly related to information presented
in your paper. Use the appropriate
referencing style for science to cite your
sources. For more information, see the
page titled “References” in the Scientific
Skills and Formatting module of the
Introduction unit in your course.
Deep lake water cooling is a revolutionary new technology which uses large
bodies of cold water as a heat sink. It is environmentally friendly and uses a
renewable energy source. Water from deep areas in lakes and oceans, at a
temperature range of 4 to 10 degrees Celsius, is passed through a heat exchanger
where cooled water is produced. The technology has a very practical application for
large urban centers, which have massive heat generating buildings. A city such as
Toronto could draw from the cold waters of nearby Lake Ontario, and transfer the
water, through pipes, to large downtown buildings. The water acts as a substitute
to traditional air conditioners, and cools the building. When the water is warmed
(and no longer serving a cooling purpose, it can be sent further on into the Toronto
utility paths and be filtered for drinking water to city residents.