Saturday, March 26, 2011

Model-based learning and greenhouse effect

Task 3

A: Make general overview of the issue (corrections to your sketch?)

The greenhouse effect is a main issue nowadays. This simulation can show us how the greenhouse effect changed in the past, and what is the situation nowadays.

B: Do you know enough about the about the atmosphere?

Three main gases in our atmosphere that contribute to the greenhouse effect. These are carbon dioxide, methane, and water.

C: What are the main things affecting to phenomena?  

I think the main affecting things of the phenomena is the increasing carbon dioxide emissions from humans. This cause dangerous global warming, and this is threatening our environment.

D: Run the simulations at least when there are: gas concentration is none and lots, 1750, Today, report your observations !

According to my observations greenhouse gas concentration affected the temperature seriously. When I set the gas concentration lower, the average temperature decreased. When I set the gas concentration to a higher level, the average temperature increased.
In 1750 the average temperature was about 14 ˚C due to the greenhouse gas concentrations.
In our days, the average temperature is about 16 ˚C due to the increasing level of carbon dioxide . It means, that the average temperature of the surface of the Earth increased with 2 ˚C since the last 300 years.
This radical changes in temperature is very dangerous, beacause it is leads to global warming. 

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