Very interesting question and the movie is simple, yet bring
I liked the idea of trying to find other reasons for the
global warming, other than the greenhouse effect. Moreover, I liked the idea
that you show that this reason is not why the planet is worming, yet, the
reasoning is scientific, make a logic sense, and you showed in a scientific
way, that it is not the planet worming cause. Great!
Comments / suggestions:
In your question, you
suggest to use water heat capacity as a model for the planet heat capacity. I
think you need to suggest a reason for the validity of this assumption.
As the “Swiss Federal
Institute of Technology Zurich” mention, the efficiency of a typical generator is
about 30%, so you get that humankind produces about 5*1013 of joules
every second, and not as you mentioned in the question. This will make the
question more close to reality, but will not change the conclusion.
Another piece of
information you luck to mention is that a lot of heating energy used by
humankind include biomass fuels, such as wood and charcoal used for heating and
cooking, which are major energy sources in many countries. Again, it will not
change the conclusion you mention, but to my understanding, it should be
Please… Change the bold font
of your question. See how it looks in the web. Thar is not much space between
There is a
connection between the question, the video and the information points. When the
video illustrate and demonstrate the question. Theinformation points, add more information to
help us out with the solution, when some points are mentioning the energy consumption
in different countries and othersare
about the raising of the global temperature.
point is given further explanation, which helps the students to solve to
question. When the other two points, are mentioning more information, so the students
widen there horizon and learn more about energy consumption and global warming.
like to recommend text editing, so all the sentences look the same.
an example that can show us how we should solve the questions, is a great and helpful
I agree with
Shacham Alon, in point 2. Using a percent of efficiency will make the problem