We

Mr Caleb Chua
Chan Hui Mui
Tan Shu Qin
Pui Pang Ping
Penny Tok
Wu Jiawen
Hillgrovians
Secondary 3
Weather Studies Project

Just say it.

The Scheldue


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 -

Observation of soil
(Color, Texture, Moisture)

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

Data Collected

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

Results of the Experiments

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

Do-you-know facts

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

Our 10 Steps to test soil

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.

Soil Pictures

[Soon, soon, soon]

Locations

School
Block 187
Block 217
Block 426
Tuas area
Jurong Island

For more information

Dirt on soil
Difference between dirt and soil
Soil pH

Archives

October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006


Contact us

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.

Count down!

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Visits

people have came, since 120206

Monday, April 17, 2006

YAY! Today was the Judging session. We were bailed out early. Like, so cute like that la. We met up at the spiral staircase. Running around school like playing truant like that.

Presenting was quite scary. Mr Chua told us they said that we were ABOVE AVERAGE but we did badly for the presentation. ):

It rained.

Q:What antilog of 0 for the pH value?
A:1



posted by Penny at 11:13 PM