sains part b

8/8/2019 sains PART B

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Section B

Bahagian B

[20 marks]Answer all questions.

Jawab semua soalan.

1 The diagram below shows the conditions of the same forest in 1990 and 2006.

Rajah di bawah menunjukkan keadaan di sebuah hutan pada tahun 1990 dan 2006.

1990 2006

(a) State one reason for the condition of the forest in 2006. Berikan satu sebab menerangkan keadaanhutan pada tahun 2006

[1 mark ]

(b) Predict thetrend in number of animals in the forest from 1990 to 2006. Ramalkan pola/corak bilangan haiwan di dalam hutan dari tahun 1990 hingga 2006.

:______________________________________________________________________ [1 mark]

(c) Give one reason for your answer in (b).

Berikan satu sebab bagi menerangkan jawapan (b) anda.

_______________________________________________________________________

[1 mark]



Q is a species of animals that lives in the jungle. In the future, animal Q is predicted to be extinct if the steps of conservation and preservation are notcarried out immediately.

Q adalah spesies haiwan yang hidup di dalam hutan. Pada masa akan datang,haiwan Q diramalkan akan pupus jika langkah pemeliharaan dan pemuliharaan

tidak dilakukan dengan segera.

(d) Based on the above information, suggest two steps of conservation and

preservationfor animal Q.

Berdasarkan maklumat di atas, cadangkan dua langkah untuk pemeliharaandan pemuliharaan bagi haiwan Q.

i) ____________________________________________________________ _

ii) ____________________________________________________________

_

[2 mark]



2 Diagram below shows young plants planted in two containers with the same size placedon a tablenear a window. Rajah di bawah menunjukkan anak pokok ditanam di dalam dua buah bekas yang sama

saiz yang diletakkan di atas meja berhampiran tingkap.

They are watered everyday. The results of the investigation are recorded in the followingtable.Tumbuhan itu disiram setiap hari. Keputusan penyiasatan direkodkan seperti jadual

berikut.

Container The average height of the seedlings (cm)

S 5

T 4

a) What is the aim of the investigation ?

Apakah tujuan penyiasatan ?

__________________________________________________________________

__________________________________________________________________ [1 mark]

b) What can you say about young plant S ?Apa yang boleh dikatakan mengenai anak pokok S ?

__________________________________________________________________ [1 mark]

c) Give reason for your answer in (b)

Beri alasan bagi jawapan kamu di (b)

__________________________________________________________________

__________________________________________________________________

[1 mark]

d) Statethe things : (Nyatakan)

i) What to change (pembolehubah dimanipulasi)

__________________________________________________________ ii) What do you measured (pembolehubah bergerakbalas)



__________________________________________________________

[ 2 markah)

3 The diagram below shows three identical springs that are stretched by weights,50 g,200 g

and 750 g attached. Rajah di bawah menunjukkan tiga jenis spring yang digantungkan dengan pemberat

50 g, 200g, dan 750g.

The extension of each spring is recorded. The results of the investigation are shown in the

following table. Pemanjangan spring direkodkan seperti jadual pemerhatian di bawah.

Mass of weights (g)

Berat pem berat (g)50 200 750

The extension of the spring (cm)

Pemanjangan spring (cm)1 4 15

(a) Give a reason to explain the different extensions of the springs. Berikan sebab untuk menjelaskan pemanjangan spring itu.

(b) In this investigation... Dalam penyiasatan ini..

i. what is changed?a pakah yang diubah (manipulasi)?

50 g

200 g

750 g

[I mark]

ii. what is measured?

Apakah yang diukur(bergerak balas)?

[I mark]



[I mark]

(c) Based on the results, state the relationship between the mass of weights and the

extension of the spring.

Berdasarkan keputusan itu, nyatakan hubungan antara berat pemberat dengan

pemanjangan spring.

(d) What will happen if weights of mass 1 kg are used?

Apakah akan terjadi jika berat pemberat 1 kg digunakan?

______________________________________________________________________

[1 mark]

[I mark]



SULIT 018

4 The diagram below shows some living things.Rajah di bawah menunjukkan sebahagian hidupan.

(a) i. Which l iving things are already extinct? Haiwan manakah yang sudahpun pupus?

_____________________________________________________________________________[ 1 mark]

ii. What is meant by the animals that are already extinct? Apakah yang dimaksudkan dengan haiwan yang telah pupus?

_______________________________________________________________________________[ 1 mark]

(b) Which living things are facing the threat of becoming extinct?Haiwan manakah yang diancam kepupusan?

(i)______________________________________(ii)_______________________________________[ 1 mark]

(c) Give one reason why the living things stated in (b) are threatened with extinction.Berikan satu sebab/alasan haiwan di (b) diancam kepupusan .

Living things Reason

(i)

(ii)

[2 marks]

018 [Lihat sebelah

SULIT

6

dinosour

rhinoceros

reflesia

crow

dodo bird

sains part b

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