ARAHAN :

1. Buka kertas soalan ini apabila diberitahu.2. Tulis nama dan angka giliran anda pada ruang yang disediakan.

3. Jawapan anda hendaklah ditulis pada ruang jawapan yang disediakan dalam kertas soalan ini 4. Kertas soalan ini hendaklah diserahkan kepada pengawas peperiksaan pada akhir peperiksaan.

Untuk Kegunaan Pemeriksa

Nama Pemeriksa:

SoalanMarkah penuhMarkahDiperoleh

SoalanMarkah penuhMarkahDiperoleh

1686

2696

36106

461110

561210

661310

761410

Jumlah

NAMA: .....

ANGKA GILIRAN:1. (a)(i)The diagram below shows the structure of a human eye.

In the table below, write the correct letter to show the eye structures involved in:

protect and maintain the eyeball shape.melindungi dan mengekalkan bentuk bebola mata

absorbs and reduces light reflection in the eyemenyerap cahaya dan mengurangkan pantulan cahaya di dalam mata.

detecting light stimulus and generating nerve impulses.mengesan rangsangan cahaya dan menghasilkan impuls saraf.

[3 marks](ii)Tick () for the correct statements of part B .

Refracts and focuses light on the retina

Regulate and control the amount of light entering the eye

Focus light into the eye and maintain the eyeball shape.

Detects light stimulus and generates nerve impulses.

[2 marks]

(b)The picture below shows a group of soldiers trying to determine the enemys position.

Tick () the suitable device that can be used in the situation above. [1 mark]

[1 mark]

2.(a)Match the correct support system for animals in the diagram below.

ANIMALSUPPORT SYSTEM

Hydrostatic skeleton

Endoskeleton

Exoskeleton

[3 marks]

(b)Match the support system for non-woody plants below with its function.

FUNCTIONSSUPPORT SYSTEM

The roots that enable plants to climb around TendrilsAir sacs

Provide buoyancy Clasping roots

The structure of plants that enables it to wrap other plants for support

[3 marks]

3.(a)(i) Heat is absorbed or released during changes of state of matter. Tick (/) the processes in which heat is absorbed by matter.

GasSolidLiquid

[2 marks] (ii) Changes of state of matter occur in our daily lives. Write heat is absorbed or heat is released based on the change of state of matter in the boxes provided.

Ice cubes are formed in the refrigerator

Ice melted under the hot Sun

[2 marks]

(b)Water is a natural resource which is essential to all living things. Write True or False for the following statements about the physical characteristics of water. Water boils at 100 C

Water conducts electricity well.

[2 marks]

4. (a) The diagram below shows three identical towels, R, S and T. All the towels are wet and dried in the sun for 2 hours.

i) Tick ( / ) the towel which will dry first.R

S

T

(1 mark)

ii) State one factor that affects the time taken for a towel to dry.

....................................................................................................................................................(1 mark)

iii) Give another application of evaporation in daily life.

....................................................................................................................................................(1 mark)

b) Write True or False for the statements below on the differences between evaporation and boiling.

1. Evaporation is a slow process while boiling is a very fast process.

1. Evaporation takes place throughout the liquid while boiling takes place only on the surface of the liquid.

1. Evaporation takes place at all temperatures below the boiling point while boiling takes place only at the boiling point.

(3 marks)

5. (a)Wai Loon used the wheel barrow to move sacks of cement from one place toanother. Label the fulcrum, load and effort on the diagram below.

[3 marks] (b)Wai Loon has three different wheel barrows which require different forces to lift the same load. For example a sack of cement weighing 100 N.Wheel barrow

The force required to lift a sack of cement weighing 100 N

A30N

B36N

C34N

I

Identify wheel barrow A, B and C in the diagram below to label the letters, A, B and C.

[3 marks]6. The diagram below shows a mixture of iron fillings and sulphur powder.

(a) State how do you separate the mixture of iron fillings and sulphur powder.

..................................................................................................................................................[1 mark]

(b) Water is a compound. To study the composition of water, a chemical process can be carried out. State and explain the process. Use a diagram to support your explanation.

..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................[ 5 marks ]

7. Diagram below shows a device that applies the principle of air pressure.

(a) (i) What will happen to the air pressure in P, when the piston is pulled outwards? .............................................................................................................................. (1 mark) (ii) Explain your answer in (a)(i) ................................................................................................................................. ................................................................................................................................. (1mark) (b) The figure below shows a woman pumping tyres.

(i) State one inference based on the situation above. ................................................................................................................................. .................................................................................................................................(1 mark)(ii) Explain the difference between air pressure of the tyre before and after it is pumped.

................................................................................................................................ ................................................................................................................................(1 mark) (iii) The optimum value of the air pressure of the tyre above is 250 kPa. What are the effects to the car if the air pumped is less than the optimum value?

................................................................................................................................ ................................................................................................................................(2 marks)8.Krish stands on the chair. She holds a piece of paper as shown in the diagram below. Krish lets go of the paper . The time it takes for the paper to land flat on the floor is recorded.

a) Name one force that acts on the paper to make it fall flat on the floor..................................................................................................................................... [1 mark]

b) What do you understand by force, give the definition of force?.................................................................................................................................... ....................................................................................................................................[1 mark]

c) The force of gravity occurs as the paper falls. Tick the right box to show how the force of gravity acts on the paper.Pushes downwardMenolak ke bawahPulls downwardMenarik ke bawah

Pushes upwardMenolak ke atasPulls upwardMenarik ke atas

[1mark]

d) Krish folds the paper in half. She drops the paper again, and the time is recorded for it to land flat on the floor. She repeats the test by folding the paper in half each time she wants to drop the paper. She measures the area of the paper each time she folds the paper.

In the table below she records the time it takes for the different pieces of folded papers to fall to the floor.

Number of times the paper were folded in halfBerapakali kertas dilipat separuh0124

Area of the paper (cm2)Luas kertas (cm2)60030015075

Time taken for the paper to land flat on the floor (seconds)Masa yang diambil untuk kertas mendarat di atas lantai (saat)2.61.71.31.0

(i) Describe the relationship between the area of paper and the time taken for it to land.............................................................................................................................. ..........................................................................................................................................................................................................................................................[2 marks]

e) The students have some ideas to explain why the paper fell at difference speeds. Only one is correct.

Who is correct? ....................................................... Siapa yang betul?......................................................... [1mark]

9. The diagram below shows an accident involving a double-decker bus.Rajah di bawah menunjukkan kemalangan yang melibatkan bas dua tingkat .

During the incident, there were 37 people in the bus. A total of 15 were killed in the crash together with another 12 men. The figure of 27 deaths, was deemed the worst crash in the history of road accidents crashes in the country. It claimed the most lives after an accident involving an express bus at Km 229 of the North-South Expressway near Bukit Gantang, Perak, which claimed 21 lives and injured eight others on August 13, 2007. "Double-decker sightseeing bus is said to have lost control while driving down the hill before crashing into the concrete road divider near Kampung Juang here. "The bus was then thrown into the opposite lane and overturned into a ditch as deep as one meter," he told reporters at the scene here today. Excerpt from Utusan online on 21.12.2010

a) Based on the picture and the quote above, state one factor that causes the bus to lose control.

....................................................................................................................................[1 marks]b) The diagram below shows the condition inside a double-decker bus.

Based on the diagram in (b) give two suggestions to reduce the risk of accidents involving double-decker bus.................................................................................................................................... .................................................................................................................................... .................................................................................................................................... .................................................................................................................................... ....................................................................................................................................[2 marks]

c) A lot of accidents nowadays involve double-decker bus. Give three contributing factors of the accidents.

............................................................................................................................................................................................................................................................................................................................................................................................................ .................................................................................................................................... ....................................................................................................................................[3 marks]10.Read the passage below about the sense of smell.

nasal cavityto brain

nostril

to the lungsair is inhaled

The smell is a chemical present in the air. When chemicals in the air enter the nasal cavity, the chemicals will dissolve in the mucus layer and stimulates cells to produce impulse. The impulse then is sent to the brain to be interpreted.

1. Complete the path of smelling mechanism to the brain.

NostrilBrainNostrilinOtak

[3 marks]

1. Explain why the sense of smell is less effective during cold.

..................................................................................................................................[2 marks]

1. What is the function of hairs found in the nostril?

[1 mark]

11. An ecosystem consists of several communities that interact with one another and their environment. The table below shows the data collected by Ryan from a farm.

a) Based on the table given, answer the following questions.

(i) List all the organisms that have wings......................................................................................................................................................[2 marks] (ii) Which organism can be classified in the same group as the ladybird? Explain with an appropriate reason. ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................[2 marks]b) The diagram below shows a food chain in the farm.

If the farm is contaminated with excessive amounts of chemical fertilizer used by the farmer, discuss the negative effects on the food chain. Suggest ways to overcome this problem.

..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................[6 marks]12. A student separates water from salt in a salt solution by using the Sun.

Pour some salt solution into the bottom of a container. Place a glass in the middle of the container. Cover the container with a plastic wrap by using a rubber band. Place a stone in the middle of the plastic wrap just above the glass. Leave the container under the Sun for about 1 hour.

a) Complete the statement below.

The two processes that take place in the container are .................................................. and ...................................................... .[2 marks]

b) After 1 hour, droplets of colourless liquids that form on the plastic wrap drip into the glass. Suggest one simple method to verify the liquid collected in the glass is water. Explain.

..................................................................................................................................................................................................................................................................................................................................................................................................................................................................[2 marks]

c) The following graph shows the results of heating distilled water and salt solution until they boil at room conditions. The salt solution is prepared by adding one spatula of salt in distilled water.

(i) Explain the difference in temperature of distilled water and salt solution upon heating.

..................................................................................................................................................................................................................................................................................................................................................................................................................................................................[2 marks]

(ii) The student repeats the experiment by adding 2 spatulas of salt into distilled water. On the graph shown above, sketch a line for the expected result.[1 mark]

(iii) The diagram below shows that fish are placed in two different containers. As a fish wholesaler, which container can preserve the freshness of the fish for a longer period of time. Justify your opinion by using thr result of the investigation that has been conducted.

........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................[3 marks]

13. Here is a statement released by a company about the pattern of a childrens diet which can affect their health.

Malaysians are known said to have a happy and get a taste of varieties of food choices. So, why are there still so many of our children who suffer from eating disorders? The main reason is improper eating habits and food intake is not balanced. This stems from a lack of knowledge about nutrition among parents, and also the lack of parental attention and care by parents. A study conducted two years ago by the National University of Malaysia (UKM) on more than 9,000 primary school children aged 7-12 years showed that children in Malaysia have unhealthy eating habits and lack of physical activity.

a) The diagram below shows a bad eating habit among children.

Explain why the primary school children nowadays are taking imbalance diet and most of them are suffer obesity at an early stage............................................................................................................................................................................................................................................................................................................................................................................................................. ....................................................................................................................................[3 marks]

b) The pie chart below shows the childrens diet pattern nowadays that can influence their health.

Explain three negative effects that they may suffer in future if this dietary pattern is prolonged......................................................................................................................................................................................................................................................................... .................................................................................................................................... .................................................................................................................................... ....................................................................................................................................[3 marks]

c) If you are a doctor, what would you advice your patients who are suffering from obesity......................................................................................................................................................................................................................................................................... .................................................................................................................................... .................................................................................................................................... ....................................................................................................................................[4 marks]

14. Tap water contains dissolved substances (solutes) in it. The amount and type of dissolved substances depend on where you live. This is one of the reasons why tap water tastes different in the different areas. You can find out how much solute is dissolved in water by pouring a small amount into a glass and allowing it to evaporate. The white ring or scale left behind in the glass contains minerals that were dissolved in the water. Water that contains a lot of dissolved substances is called hard water,while water that contains very few dissolved substances is called soft water.

Aquarium

a) Phang had a fish tank (aquarium). As the water evaporated, she would add more water. She noticed a line of white scale on the inside of the fish tank where the water evaporated.Explain Phangs observation......................................................................................................................................................................................................................................................................... .................................................................................................................................... ....................................................................................................................................[3 marks] b) The diagram below shows the water cycle.

i) Name two natural sources of water. ................................................................................................................................ ................................................................................................................................[2 marks] ii) Rain water is the purest form of water among all natural sources. Yet it usually contains dissolved gases, microorganisms and dust. Based on the statement, state two processes of purification of water so that the water is safe for use. Based on the above statement, state two processes of purification of water so that the water is safe for use. ................................................................................................................................ ................................................................................................................................[2 marks]c) It is important to have good drinking water. Water found underground is referred to as ground water. Give reasons why there is less pollution by bacteria and particles in ground water than in water from surface sources such as river and sea.

..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................[2 marks]

d) Pure water can be obtained by distillation. State one use of distilled water..................................................................................................................................... [1 mark]

*** QUESTION PAPER ENDS ***

Prepared by,..............................................( RAMANATH TAMELARASAN )1