BAHAGIAN B

1. Faizal carries out an investigation. The following are the steps of his investigation. Faizal menjalankan satu penyiasatan. Berikut adalah langkah-langkah dalam

penyiasatannya.

Step 1: He sprinkles a few drops of water on a slice of bread. Langkah 1: Dia merenjiskan beberapa titis air ke atas sekeping roti. Step 2: He puts the slice of bread in a plastic bag.

Langkah 2: Dia meletakkan roti itu di dalam beg plastik. Step 3: He observes the slice of bread after four days.

Langkah 3: Dia memerhatikan roti itu selepas empat hari. Step 4: He views the slice of bread under a microscope. Langkah 4: Dia melihat roti itu di bawah mikroskop.

The diagram below shows the observation of Faizal.

Rajah di bawah menunjukkan pemerhatian Faizal.

(a) What can be observed after four days? Apakah yang dapat diperhatikan selepas empat hari?

________________________________________________________________________

[1 mark/1 markah] (b) i. Are the moulds microorganisms?

Adakah kulapuk merupakan mikroorganisma?

________________________________________________________________________

[1 mark/1 markah]

ii. Give reasons for your answer in (b)i. Berikan sebab bagi jawapan kamu di (b)i.

________________________________________________________________________

[1 mark/1 markah

2. In an investigation, a sample of 200 ml of water is taken from a river. A drop of water from the river

is observed under a microscope. Then, some of the water in the sample is boiled. A drop of water which has been boiled is observed under the microscope.

Dalam satu penyiasatan, 200 ml sampel air sungai diambil. Setitik air sungai itu diperhatikan di bawah

mikroskop. Kemudian, sedikit air daripada sampel itu dididihkan. Setitik air yang telah dididihkan itu diperhatikan di bawah mikroskop.

DIAGRAM / RAJAH

(a) What can be seen when the drop of water from the sample is observed under the microscope?

Apakah yang dapat diperhatikan apabila setitik sampel air itu dilihat di bawah mikroskop?

_________________________________________________________________________

________________________________________________________________________ [1 mark/markah]

(b) Give one example of a microorganism that lives in water. Berikan satu contoh mikroorganisma yang tinggal di dalam air.

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[1 mark/markah]

(c) What can be seen when a drop of the water from the sample which has been boiled is

observe under the microscope? Apakah yang dapat diperhatikan apabila setitik sampel air sungai yang telah

(c) To which group of microorganisms do the moulds belong? Kulapuk dikelaskan dalam kumpulan mikroorganisma mana?

_________________________________________________________________________ [1 mark/1 markah]

dididihkan dilihat di bawah mikroskop?

________________________________________________________________________

________________________________________________________________________

[1 mark/markah]

(d) In this investigation, which of the river water is safe to drink? Dalam penyiasatan ini, air sungai manakah yang selamat diminum?

________________________________________________________________________

_________________________________________________________________________

[1 mark/markah]

3. The diagram below shows Amirul suffering from a disease. Rajah di bawah menunjukkan Amirul menghidap suatu penyakit.

(a) Name the disease.

Namakan penyakit ini.

_________________________________________________________________________ [1 mark/1 markah]

(b) What is the cause of the disease? Apakah penyebab penyakit ini?

________________________________________________________________________

[1 mark/1 markah]

(c) How do you think Amirul gets the disease? Pada fikiran kamu, bagaimanakah Amirul mendapat penyakit tersebut?

_________________________________________________________________________ [1 mark/1 markah]

(d) Amirul is advised by the doctor to stay away from school until he gets better.

Give one reason. Amirul dinasihatkan oleh doktor supaya tidak hadir ke sekolah sehinggalah dia sembuh. Berikan satu sebab.

_________________________________________________________________________ [1 mark/1 markah]

1. Table 2 below shows the result of an investigation carried out on the number of turtles

that return to lay eggs at Rantau Abang every year.

Jadual 2 dibawah menunjukkan keputusan penyiasatan tentang penyu yang bertelur

di Rantau Abang setiap tahun.

Year

Tahun

Number of turtles laying eggs

Bilangan penyu bertelur

2005 500

2006 400

2007 300

2008 200

Jadual 2

(a) State Nyatakan

(i) What is changed?

Apa yang diubah (pembolehubah dimanipulasi)? __________________________________________________________

(ii) What is observed?

Apa yang diperhatikan (pembolehubah bergerak balas)?

___________________________________________________________

(b) What is the purpose (aim)?

Apakah tujuan penyiasatan ini?

___________________________________________________________

___________________________________________________________

(c) What is the trend of change in the number of turtles that lay eggs? Apakah corak perubahan bagi bilangan penyu yang bertelur?

___________________________________________________________

(4 markah)

2. The chart below shows the result of an investigation at the factories. Carta di bawah menunjukkan keputusan penyiasatan yang dilakukan di kawasan

perkilangan.

(a) What is the aim of this investigation?

Apakah tujuan penyiasatan ini? ____________________________________________________________

_____________________________________________________________

(b) State: Nyatakan:

(i) What is changed : Apa yang diubah (pembolehubah dimanipulasi):

__________________________________________

(ii) What is observed :

Apa yang diperhatikan (pembolehubah bergerak balas): ______________________________________

(c) What is the trend of the percentage of air pollution? Apakah corak perubahan bagi peratus pencemaran udara?

_____________________________________________________________

[4 Markah]