TUGASAN RAHSIA SKOR

TUGASAN FLIPPED CLASSROOM
RAHSIA SKOR KERTAS 4551/3

1. Satu eksperimen telah dijalankan untuk mengkaji kesan keamatan cahaya terhadap kadar
transpirasi pada pucuk bunga raya dengan menggunakan photometer gelembung. Rajah 1
menunjukkan susunan radas yang digunakan untuk mengenalpasti kadar transpirasi pada
keamatan cahaya yang berlainan. Bacaan gelembung udara pada potometer diambil pada
permulaan eksperimen dan sekali lagi selepas 10 minit.
An experiment was carried out to study the effect of light intensity on the rate of transpiration of
hibiscus shoot by using a bubble potometer. Diagram 1 shows the apparatus set-up to determine
the rate of transpiration at different light intensities. Air bubble reading in the potometer was
taken at the beginning of the experiment and once again after 10 minutes.

Rajah 1
Diagram 1
Potometer gelembung di letakkan di bawah keamatan cahaya yang berbeza.
The bubble potometer was placed under different light intensities.

1

Jadual 2 menunjukkan keputusan eksperimen ini.
Table 2 shows the results of the experiment.

Keamatan Bacaan awal gelembung udara (cm) Bacaan akhir gelembung udara(cm)
cahaya (Watt) Initial reading of air bubble(cm) Final reading of air bubble(cm)
Light Intensity
(Watt)

5 1.1 cm
0.5 cm

25

…………..cm …………..cm

40

…………..cm …………..cm

60

…………..cm …………..cm
2
Jadual 1
Table 1

(a) Catatkan kedudukan gelembung udara di Jadual 1.
Record the position of the air bubble in Table 1.

[3markah]
[3 marks]

(b) (i) Berdasarkan Jadual 1, nyatakan dua pemerhatian yang berbeza.
Based on Table 1, state two different observations.

Pemerhatian 1:
Observation 1:

…………………………………………………………………………………………………..

…………………………………………………………………………………………………..

Pemerhatian 2:
Observation 2:

……………………………………………………………………………………………………

……………………………………………………………………………………………………

[3markah]
[3 marks]

(ii) Nyatakan inferens daripada pemerhatian di (b)(i).
State one inference from the observation in (b)(i).

Inferens daripada pemerhatian 1:
Inference from observation 1:

…………………………………………………………………………………………………….
…………………………………………………………………………………………………….

Inferens daripada pemerhatian 2:
Inference from observation 2:

………………………………………………………......................................................................

...................................................................................................................................

[3 markah]
[3marks]

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(c) Lengkapkan Jadual 2 berdasarkan eksperimen ini.
Complete Table 2 based on the experiment .

Pembolehubah Cara mengendali pembolehubah
Variable Method to handle the variable

Pembolehubah dimanipulasikan
Manipulated variable

………………………………………... ……………………………………………………...

………………………………………... ……………………………………………………..

……………………………………….. …………………………………………………….

Pembolehubah bergerak balas
Responding variable

………………………………………... ……………………………………………………...

………………………………………... ……………………………………………………..

……………………………………….. …………………………………………………….

Pembolehubah dimalarkan Constant
variable

………………………………………... ……………………………………………………...

………………………………………... ……………………………………………………..

……………………………………….. …………………………………………………….

Jadual 2
Table 2

[3 markah]
[3 marks]

(d) Nyatakan hipotesis bagi eksperimen ini.
State the hypothesis for this experiment.

………………………………………………………………………………………………………...
………………………………………………………………………………………………………...
……………………………………………………………………………………………………...…

[3 markah]
[3marks]

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(e) Bina satu jadual dan rekod semua data yang dikumpulkan dalam eksperimen ini.
Jadual anda hendaklah mengandungi tajuk-tajuk berikut:
Construct a table to record all the data collected from this experiment. Your table
should have the following titles:

• Keamatan cahaya
Light intensity

• Bacaan awal dan akhir gelembung udara
Initial and final readings of air bubble

Kadar transpirasi
• Rate of transpiration

Kadar transpirasi= Bacaan akhir gelembung udara-Bacaan awal gelembung udara
Masa

Rate of transpiration= Final reading of air bubble-Initial reading of air bubble
Time

(f) (i) Dengan menggunakan data di (e), lukiskan graf kadar transpirasi melawan [3 markah]
keamatan cahaya [3 marks]

Using the data in (e), draw a graph of the rate of transpiration against light [3 markah]
intensity. [3 marks]
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(ii) Berdasarkan graf di (f)(i), terangkan perhubungan di antara kadar transpirasi dan keamatan
cahaya.
Based on the graph in (f)(i), explain the relationship between the rate of transpiration and
light intensity.

……………………………………………………………………………………………………
……………………………………………………………………………………………………
……………………………………………………………………………………………………
……………………………………………………………………………………………………
……………………………………………………………………………………………………

[3 markah]
[3 marks]

(g) Nyatakan definisi secara operasi bagi proses transpirasi.
State the operational definition for the process of transpiration.

…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..

[3 markah]
[3 marks]

(h) Eksperimen di ulangi dengan meletakkan potometer gelembung pada keamatan cahaya 5 Watt,
tetapi dibawah kipas yang bergerak.Ramalkan jarak bagi gelembung udara bergerak selama 10
minit.Terangkan ramalan anda.

The experiment was repeated by placing the bubble potometer set-up under light intensity of 5
Watts, but under a moving fan. Predict the distance taken for the air bubble to move in 10 minutes.
Explain your prediction.

……………………………………………………………………………………………………….
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………

[3 markah]
[3 marks]

6

(i) Kelaskan bahan dan radas berikut dalam Jadual 3.
Classify the following materials and apparatus in Table 3.
.

Potometer gelembung Lampu Vaselin
Bubble photometer Lamp Vaseline

Air Pucuk Bunga Raya
Water Hibiscus shoot

Bahan Radas
Material Apparatus

Jadual 3
Table 3

[3 markah]
[3 marks]

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