SMK TAMAN EHSAN52100 KEPONG, SELANGOR

TEST 2 2010Name: ______________________________ Form: __________ Date: _____________

SCIENCE FORM 21 hour

1. This question paper consists of 20 questions. Choose the best answer and mark your answer in spaces provided on page 4.

2. Part B consists of 5 structure questions. Write your answer in the spaces provided.3. Do not separate this paper.

Section A [20 marks]

1 Sound travels the fastest throughA liquids

B solids

C gasesD vacuum

2 The following diagram shows a fish.

Which of the following is the advantage of the vision of the fish?

A It can see three-dimensional objects B It can estimate distance

and position accuratelyC It can see the colours of

objectsD It scope of vision is wide

3 Which of the following senses work together with the sense of taste?

A TouchB Sight

C HearingD Smell

4 Which of the following disease is caused by a shortage of protein in the diet over a long period of time?

A AnaemiaB InfertilityC KwashiorkorD Rickets

5 Which of the following processes involve faeces being expelled through the anus?

A DefecationB PeristalsisC ExcretionD Digestion

6 Which of the following class of food is required the least in a healthy balanced diet?

A ProteinB FatC FibreD Carbohydrate

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7 The following diagram shows a food pyramid.

Which of the following food is not found in level X?A Rice

B Cereals

C MeatD Potatoes

8 The following diagram shows the human digestive system.

Which organs do the digestion of proteins take place?A P and S onlyB Q and R onlyC P, Q and R only

D P, Q, R and S

9 A place where plants or animals live is called a

A houseB habitatC community D space

10 What are vertebrates?A Animals which are warm-

bloodedB Animals which are cold-

bloodedC Animals with backbonesD Animals without

backbones

11 The following diagram shows three types of animals.

The animals shown above are classified into A mammal B fish

C birdD reptile

12 Different populations of animals and plants living in the same habitat is called

A habitat B population

C communityD ecosystem

13 The following diagram shows the

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leaf of a type of plant.

Which of the following is the characteristic of the plant?

A Each of its seeds consists of endosperm B Each of its seeds

consists of two cotyledons

C The plant has a fibrous root system D Its vascular bundles are scattered

14 Which gas is necessary for photosynthesis? A Nitrogen

B OxygenC Carbon dioxideD Carbon monoxide

15 The energy from the sun is changed to chemical energy by

A mushroomB paddy plantC yeastD mould

16 The following diagram shows an interaction.

Which of the following pairs of

animals has this type of interaction?

A A dog and a flea B A buffalo and a mynah C An owl and a mouse D A hermit crab and a sea anemone

17 The following diagram shows a plant which is placed under the sun.

What are represented by gas P and gas Q?

18 The following are differences between a suspension and a solution except

19 Which of the following factors does not influence the rate of evaporation of water?

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Suspension SolutionA murky clearB can be filtered cannot be filteredC non-homogenous homogenousD does not form

sediment after a whileforms sediment after a while

A The humidity of airB The movement of airC The impurities in the airD The temperature of the

surroundings

20 The following diagram shows a wet T-shirt hanging on a clothes line.

Which of the following are the best conditions for drying the wet T-shirt?

A Hot, dry and moving air B Hot, dry and still air C Cold, humid and moving air D Cold, humid and still air

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Section B [30 marks]

Answer all questions.

1. Diagram below shows the cross-section of human ear.

a) In diagram above, label part X and Y using the following words.

(2 marks)

b)i. State the function of part Z.

________________________________________________________________________

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Semicircular canals Ossicles

___________(1 mark)

ii. State the function of part X__________________________________________________________________________________________

(1 mark)

c)i. What is an echo?

___________________________________________________________________________________

(1 mark)

ii. Suggest one way to reduce the effect of echo in a hall.____________________________________________________________________________________

(1 mark)

2. Diagram below shows the carbon cycle.

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a) Complete the carbon cycle in diagram above by using the words given.

(4 marks)

b) What are the roles of plants in the carbon cycle?i. ____________________________________________________________

______________________

ii. __________________________________________________________________________________

(2 marks)

c) What is the effect of excessive carbon dioxide in the atmosphere?

___________________________________________________________________________________

(1 mark)

d) Name the gas produced in respiration?

___________________________________________________________________________________

(1 mark)

3. The experiment below is carried out to test the leaf for the presence of starch. This experiment consists of a few steps. Write out the purpose of each step of the experiment.

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Respiration Nutrition Photosynthesis

(4 marks)

4. Diagram below shows an experiment.

a) What is the purpose of the experiment?

__________________________________________________________________

_________________

(1 marks)

b) Name the following electrodes.i. Electrod P:

______________________________________________________________________

ii. Electrod Q: _______________________________________________________________________

(2 marks)

c) What is Z?___________________________________________________________________________________

(1 mark)

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d) Identifyi. Gas X :

______________________________________________________________________

ii. Gas Y : ______________________________________________________________________

(2 marks)

5. Diagram below shows an experiment which is carried out to investigate the effect of temperature on the rate of dissolving?

a) State a suitable hypothesis of this experiment.

__________________________________________________________________

_________________

(1 marks)

b) State the variables involved in this experiment.i. Manipulated variables :

__________________________________________________________ii. Responding variables :

__________________________________________________________iii. Constant variables :

__________________________________________________________ (3 marks)

c) What is the observation?

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___________________________________________________________________________________

(1 mark)

d) Write a suitable conclusion for the experiment.___________________________________________________________________________________

(1 mark)

END OF QUSTIONS

Prepared by, Checked by,Varified by,

(PN. ZAROTUL AINI ZAKARIA) PN. SHARIFAH DAHLIA SYED AZIZ Guru Sains Tingkatan 2 Ketua Panitia Sains

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