STOP POLLUTION
NOW!
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Leader:
Brenda
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Members:
Deanna
Clara
Emeline
Charlene
OUR gallery.
KALLANG RIVER
SUNGEI SERANGOON
SCIENCE DATA
Wednesday, April 29, 2009, 5:14 AM
pH level of :
Kallang River : 6
Possible substances that could have contributed to this:
Food leftovers and rubbish.
Sungei Serangoon: 8
Possible substances that could have contributed to this:
Oil, chemicals in river.
TEMPERATURE OF:
Kallang river
River water: 29.5 Degrees Celsius
The air near the river: 28.5 Degrees Celsius
Difference in temperature: 1 Degree Celsius
Sungei Serangoon
River water: 30 Degrees Celsius
The air near the river: 31 Degree Celsius
Difference in temperature: 1 Degree Celsius
BACTERIA CULTURE
Q:Is there presence of bacteria?
A:
Kallang river- Yes, as observed, the colonies of the bacteria are blurry.
Sungei Serangoon-
Yes, as observed, the colonies of the bacteria have a lot of maggots in the petri dish and it is also blurry.
CONCLUSION!
- The dirtier the environment, the more polluted the river.
Q: After testing the water samples from the river, do you think the the river is polluted?
A:
Kallang River- Yes, it has a lot of rubbish dumped in it.
Sungei Serangoon- Yes, the UI [universal indicator] shows that it has high
alkalinity.
So....
The KALLANG RIVER is more polluted due to the following activities:
Construction, littering, etc.