Location: Tables outside LT 23
Time: 3pm – 4.30pm
Team members who attended:
Andrew, ChungKei, Elyza, Jerome and Michael.
Team members who did not attend: N/A
Topics discussed:
1. Discuss about plans for the blog
2. AE 5
Tasks to be done before the next meeting:
1. Send answers to Jerome
2. Jerome posts onto the blog.
3. Research on our selected topic.
Problems: N/A
Plan of action:
Wait for Professor Felipe to approve of our topic selection.
Meet up during Recess Week
Portable pump filter: Some commercially available filter uses ceramic filter as the cartridge to filter impurities in water. It can filter up to the micrometer. This filters most of the bacteria, making water safer to drink. It is portable and easy to carry during outdoor activities, hiking.
However, it is less effective in filtering viruses since they are generally smaller in size. Also, depending on the types of filters, the price varies. It is still generally more expensive as compared to boiling and water purification tablets.
Portable pump filter is analogous to the filtration method used in water treatment. It is only a scale down version since it is made portable.
Q1) Instead of directly reflecting back to space, most of the energy leaving the Earth’s surface can be trapped and retained by the greenhouse gases at the atmosphere (e.g. Methane, Ozone, Carbon dioxide, water vapour, Nitrous oxide). Hence, this maintains the Earth’s temperature and will not cool rapidly.
Q2) The statement is incorrect because the rise of temperature as the cause of global warming may be intensifying the effects of the jet stream’s position, which in the winter can cause extreme cold weather and caused extreme climate change and that is why winter not reducing global warming effect but in contrary bring more harm.
Q3) The surround atmosphere contains water vapour. When the radar tries to detect the target, it will also trigger the rotation of the water molecules at the same time. This will lead to an inaccuracy in the signals given out during the detection.
Q4) Among the 3, air quality problem poses the most serious threat in the short run.
The reason is that the effects of such problem are immediately felt (e.g. rise in CO level in air leads to harmful health effects, sometimes death, within minutes);
whereas effects of the other two are more concerned towards the future (e.g. rise in sea level is not much of a threat now, but could displace many shore-based population in several decades ahead if current trend is kept).
Global warming would pose the most serious threat in the long run.
Some long term threats include,
• More frequent intense droughts that would reduce the supply of agriculture whilst the demand is increasing due to an increased in global population size
• Increase in ocean temperatures which threatens the marine biodiversity and the loss of habitat (e.g. Rising temperatures on the Great Barrier Reef leads to coral bleaching, corals die, loss of habitat for marine life, loss of marine life)
• Rising sea levels which threatens countries such as The Netherlands, where more than half of the country is below sea level, and rising sea levels will pose social and economical problems to the country.
• Reduction in the amount of artic sea ice to a point of complete annihilation.
Location: North Spine tables near McDonald’s
Time: 2pm – 2.30pm
Team members who attended:
Andrew, ChungKei, Elyza, Jerome and Michael.
Team members who did not attend: N/A
Topics discussed:
1. Blog’s ‘About The Team’ page.
Tasks to be done before the next meeting: N/A
Problems: N/A
Plan of action:
Wait for Professor Felipe to approve of our topic selection.
Location: Benches outside LT23
Time: 3pm – 4pm
Team members who attended:
Andrew, ChungKei, Elyza, Jerome and Michael.
Team members who did not attend: N/A
Topics discussed:
1. Selection of topic in Chapter 5 – Water for Life, reason for picking the concepts.
2. AE4
Tasks to be done before the next meeting:
Submit Topic Selection email to Professor Felipe – Jerome
AE4
Q1 – Jerome
Q2 – Michael
Q3 – ChungKei
Q4 – Andrew & Elyza
Problems: N/A
Plan of action:
Wait for Professor Felipe to approve of our topic selection.
Today we learn about protecting ozone layer, start from how the ozone is produces, why there is a depletion, the cycle of ozone, the change in concentration, and many more.
As we know the ozone is depleting due to many production of greenhouse gases. The ozone concentration is also change overtime.
Today I Learned:
(Disclaimer: All images are taken from Google Images. All rights belong to the respective owners)
Today we discussed about the Ozone Layer in our class, CM8001.
We learnt about the importance of the Ozone Layer; it absorbs some UV radiation,
learnt where the Ozone Layer is; the Stratosphere,
learnt that the chlorine atoms in CFCs act as the catalyst that decompose the Ozone Layer,
learnt that UV-A is the region of the ultraviolet spectrum least absorbed by the atmosphere (honestly I didn’t even know there was more than 1 region),
but one of the most important thing we learnt today is that the Ozone Layer is not equal throughout.
Some parts of the Ozone Layer contains more Ozone than others, and with no prior knowledge in this subject/topic might not know this because of the name “Ozone Layer” which might be misleading.
I give today’s lesson a 10/10 for information and knowledge acquired.
#chemrocks
The new thing I learnt today is The Chapman Cycle.
O2 -> 2O (242nm)
2O + 2O2 -> 2O3 (fast)
2O3 -> 2O +2 O2 (320nm)
3 X 10^8 tons of O3 at steady state
Dynamic balance of Ozone in the Stratosphere.
