Mr Caleb Chua
Chan Hui Mui
Tan Shu Qin
Pui Pang Ping
Penny Tok
Wu Jiawen
Hillgrovians
Secondary 3
Weather Studies Project
150606 - 9 AM, outside staffroom
160606 -
170606 -
180606 -
190606 -
200606 -
210606 -
220606 - 9 AM, Macdoanlds
230606 -
240606 -
250606 -
260606 -
270606 -
280606 -
290606 - 3 o'clock, IT resource room
300606 -
010706 -
020706 -
030706 -
040706 -
050706 - Set up exhibition - concord
060706 - Technical run-through
070706 - 7 AM - 5 PM, concord primary
080706 - 10 AM, concord primary
090706 -
100706 -
110706 -
120706 -
130706 -
| School's soil |
| Date |
Color |
Texure |
Moisture |
| 06/01/06 |
Light Brown |
Coarse |
Little |
| 13/01/06 |
Brown |
Coarse |
Yes |
| 20/01/06 |
Light Brown |
Coarse |
Little |
| 27/01/06 |
Brown |
Coarse |
No |
| 03/02/06 |
Yellowish Brown |
Fine |
Yes |
| 10/02/06 |
Dark Brown |
Fine |
Yes |
| 17/02/06 |
Dark Brown |
Coarse |
A lot |
| 24/02/06 |
Light Brown |
Fine |
Little |
| 03/03/06 |
Light Brown |
Coarse |
No |
| 10/03/06 |
Brown |
Coarse |
No |
| Block 187's soil |
| Date |
Color |
Texure |
Moisture |
| 03/02/06 |
Pale Brown |
Fine |
Yes |
| 10/02/06 |
Brown |
Coarse |
Yes |
| 17/02/06 |
Brown |
Coarse |
Yes |
| 24/02/06 |
Greenish Brown |
Coarse |
No |
| 03/03/06 |
Greenish Brown |
Coarse |
No |
| 10/03/06 |
Greenish Brown |
Coarse |
No |
| Block 217's soil |
| Date |
Color |
Texure |
Moisture |
| 03/02/06 |
Blackish Brown |
Fine |
No |
| 10/02/06 |
Blackish Brown |
Coarse |
Yes |
| 17/02/06 |
Blackish Brown |
Coarse |
Yes |
| 24/02/06 |
Blackish Brown |
Coarse |
No |
| 03/03/06 |
Blackish Brown |
Coarse |
No |
| 10/03/06 |
Blackish Brown |
Fine |
Yes |
| Block 426's soil |
| Date |
Color |
Texure |
Moisture |
| 03/02/06 |
Brown |
Fine |
Little |
| 10/02/06 |
Brown |
Coarse |
Yes |
| 17/02/06 |
Brown |
Fine |
Little |
| 24/02/06 |
Brown |
Fine |
No |
| 03/03/06 |
Brown |
Fine |
No |
| 10/03/06 |
Brown |
Fine |
No |
| Date |
Avg. Temp |
Avg. Rainfall |
Wind Direction |
| 31/12-06/01 |
26.23 |
20.17 |
WNW |
| 07/01-13/01 |
25.59 |
37.7 |
NE |
| 14/01-20/01 |
27.26 |
4.74 |
WNW |
| 21/01-27/01 |
27.46 |
3.91 |
NE |
| 28/01-03/02 |
28.21 |
0.26 |
NE |
| 04/02-10/02 |
27.11 |
12.00 |
NE |
| 11/02-17/02 |
27.84 |
2.66 |
NE |
| 18/02-24/02 |
28.03 |
4.86 |
NE |
| 25/02-03/03 |
28.71 |
3.11 |
NE |
| 04/03-10/03 |
28.59 |
1.31 |
NE |
pH meter''s result
| Date |
School |
Block 187 |
Block 217 |
Block 426 |
| 03/02/06 |
4.46 |
6.24 |
6.74 |
7.62 |
| 10/02/06 |
4.56 |
5.61 |
5.47 |
8.05 |
| 17/02/06 |
5.53 |
5.61 |
6.18 |
7.90 |
| 24/02/06 |
4.46 |
6.21 |
6.50 |
8.74 |
| 03/03/06 |
4.53 |
6.80 |
6.30 |
8.68 |
| 10/03/06 |
5.56 |
6.34 |
7.08 |
8.45 |
|
| Date |
School |
Blk 187 |
Blk 217 |
| 06/01/06 |
Light Brown |
Coarse |
Little |
| 13/01/06 |
Brown |
Coarse |
Yes |
| 20/01/06 |
Light Brown |
Coarse |
Little |
| 27/01/06 |
Brown |
Coarse |
No |
| 03/02/06 |
Yellowish Brown |
Fine |
Yes |
| 10/02/06 |
Dark Brown |
Fine |
Yes |
| 17/02/06 |
Dark Brown |
Coarse |
A lot |
| 24/02/06 |
Light Brown |
Fine |
Little |
| 03/03/06 |
Light Brown |
Coarse |
No |
| 10/03/06 |
Brown |
Coarse |
No |
Chemicals can be acidic, neutral or basic depending on how many hydrogen ions they have.
Hydrogen ions are really just protons, a small particle that has a positive charge.
Scientists can find out whether a chemical is acidic, neutral or basic by testing its pH.
They use a special paper, called litmus paper, to do the pH test.
MORE FACTS
Acid solutions have a pH of less than 7 (and turns blue litmus paper red)
A neutral has a pH of 7.
Basic solutions has a pH more than 7 (and turns red litmus blue)
Do you know what pH stands for?
pH means power of hydrogen. Therefore, using litmus paper gives an idea of how much hydrogen or protons is in a solution.
What is an acid?
An acid is a chemical that has plenty of protons in solution.
Protons have a positive charge this is what makes a solution acidic solution.
Most acid chemicals have a sour taste. In fact, the word "acid" comes from the Latin word acidus which means "sour".
Examples of acids are: lemon juice and vinegar.
What is an alkali?
An alkali the opposite of an acid. It is a chemical that does not have a lot of protons in a solution.
Instead, a basic solution which has the ability to accept plenty of protons.
An alkalis is a base that can dissolve in water.
Examples of alkali are: toothpaste and household cleaners
Testing for pH values
Paper
1. Red Litmus paper
2. Blue Litmus paper
3. Universal Indicator
Solutions
4. Phenolphthaein solution
5. Methyl Orange (pH 2.9-4.6)
6. Bromothymol blue (pH 6.0(yellow) to pH 7.6(blue)
Credits
www.cogltd.com
1. Wash apparatus with distilled water.
2. Put soil into beaker.
3. Add distilled water into beaker and stir.
4. Placed the folded filter paper on top of a new beaker.
5. Pour the mixture into the filtered paper.
6. Wait for mixture to be filtered.
7. Use a dropper to place various test solutions and paper into six different test tubes.
8. Use another dropper to place filtrate into the six test tubes.
9. Use tweezer to take tested paper out of the test tube to place in zip lock bag
10. Take pictures of tested solution.
[Soon, soon, soon]
School
Block 187
Block 217
Block 426
Tuas area
Jurong Island
Dirt on soil
Difference between dirt and soil
Soil pH
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
babyhilly@hotmail.com
or alternatively,
f4_chanhuimui@hotmail.com,
tanshuqin@hotmail.com,
classicjw@hotmail.com,
sophisticated-p@hotmail.com.
p.s please tag to inform us if you e-mailed.
)
people have came, since 120206
Monday, March 06, 2006
Our faces appears
HOORAY! we finally have a really nice family photo,
we had conducted the tests for the soil collected from the different blocks as well as the soil from the school compound.
I will have to rush for a lesson straight after this,
so this will be a short post,
take note babyhillies,
there will be some changes needed to this site,
here is the list of things to be done to make this site better,
- Blog dates to be sychronized
- data collected should be extended to 11 march 2006
- include the links for the pictures of the soil in the table
- enlarge the maps for the blocks, mainly blk 187, blk 217 and block 426.
- credits should should should be given to every article extracted from some other websites.
all these should be done by 11 march 2006 BIG NEWS! Our blog have to be completed by 11 march and the rest of the data should all be analysed by 16 march 2006, knowing that some of you are having a very busy week, i would like to inform you hillies that the next meeting will be held on 15 march that is on a wednesday,
all the tests SHOULD be finished by then.
RING!!! did you hear the bell?
(ok fine, its a joke)
the school bell has rung, and i have to get back to class for POA lessons,
goodbye, i will update again later on around noon.
(: happy soil happy.
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