1. GROUP 6 :
YVONNE STEPHANIE A/P PATINADAN
(M20112001684)
OOI SIEW FONG
(M20121000104)
SALASIYAS BINTI MAT KILA
(M20112001398)
PRECILLA A/P ROVAT @ ROBERT
(M20131000662)
ARCHUNA A/P SUBRAMANIAM
(M20131000658)
LECTURER: PROFESOR DR. SOPIA BINTI MD YASSIN

2. GET THE BOATS
GREENHOUSE EFFECT

3. Scientific Concept
Greenhouse effect has been widely used to describe the trapping of excess heat by
the rising concentration of greenhouse gases (CO2, methane, water vapour) in the
atmosphere.
One of the major greenhouse gases, CO2, strongly absorbs infrared radiation and
does not allow much of it to escape into space.
This causes the temperature of the earth to rise, which results in global warming

4. Scientific Concept
Reference : http://www.nps.gov/goga/naturescience/images/Greenhouse-effect.jpg

5. ENGAGE
Situation A
Situation B
The picture in situation A depicts the condition of an Artic sea ice in 1979.
The picture in situation B depicts the condition of the same Artic sea ice in
1997. Explain why this had happened.

6. Procedure
Prepare 2 conical flasks (A & B)
Seal the conical flask immediately with a
rubber cork and swirl the solution
Put in 35 g of baking powder into each conical
flask
Once the temperature is stabilized, switch on
the bulb
Place the temperature probes into each
conical flask
Start the data logger and record the
temperature for 10 min
Add 65 ml of water into conical flask A and
65 ml vinegar into conical flask B

7. EMPOWER
Planning and Doing Experiment
Retort stand
Baking powder

8. Rubber cork
Temperature probe

9. Results
Time (s)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
Temperature (° C)
Run 1
Run 2
25.1277
25.3933
25.4948
25.7540
25.8265
26.1159
26.1272
26.4234
26.4073
26.7699
26.6240
27.0922
26.8348
27.3227
27.0353
27.6060
27.2270
27.7780
27.4009
28.0749
27.5896
28.2778
27.7312
28.3706
27.9228
28.5980
28.0982
28.8162
28.2530
29.0282
28.3842
29.2543
28.5204
29.4431
28.6511
29.5586
28.7631
29.6344
28.9135
29.8461
29.0334
29.9298
29.1611
30.0924
29.2879
30.2663
29.4088
30.3300
29.5150
29.8304
29.6211
30.6394
29.7557
30.8078
29.8599
30.7650
29.9749
30.9793
30.1017
31.0767
30.2226
31.1775
Time (s)
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
560
570
580
590
600
Temperature (° C)
Run 1
Run 2
30.3081
31.2862
30.4113
31.3337
30.5145
31.5220
30.6177
31.6240
30.7371
31.6688
30.8594
31.9122
30.9641
32.0165
31.0511
31.8351
31.1248
32.0096
31.2074
32.1631
31.3047
32.3326
31.3902
32.4431
31.4963
32.5634
31.5651
32.6116
31.6599
32.7083
31.7469
32.8342
31.8555
33.0632
31.9386
33.0677
32.0275
33.2767
32.1450
32.9296
32.2305
33.3657
32.3101
33.4967
32.4015
33.5762
32.4870
33.6393
32.5828
33.7472
32.6639
33.8450
32.7568
33.9972
32.8408
34.0931
32.9307
34.1230
33.0177
34.0571

10. With vinegar
Temperature
( C)
With water
Time (s)

11. Discussions
1
Based on the graph, which conical flask has a higher rate of temperature increase?
2
Name the gas that is produced in conical flask B
3
Suggest a simple chemical test that can be used to confirm the presence of the gas in
conical flask B
4
What is the purpose of using bulbs in this experiment?
5
Why is there a difference in the rate of temperature increase in both of the conical flasks?

12. ENHANCE
One of the most affected elements of global warming is our sea. In your opinion,
how do you think global warming could adversely affect the sea level?

13. UNIQUE FEATURES OF THIS ACTIVITY
A small change in the temperature can be detected easily and measured
accurately by using the temperature probe.
Two graphs can be plotted simultaneously with ease to have a clearer
picture of the temperature increase in the conical flasks.
Tables can be generated easily and precisely for each run by the software
according to the output of the experiment.
Students’ interest in practical work could be stimulated

14. REFERENCES
http://www.nps.gov/goga/naturescience/images/Greenhouse-effect.jpg
http://www.clean-air-kids.org.uk/globalwarming.html
http://www.nps.gov/goga/naturescience/climate-change-causes.htm
http://www.climatechange.gov.au/greenhouse-effect