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55/2 NAME:ScienceForm 1Paper 2 FORM:May20091 ½ hours

SEKOLAH TUN FATIMAH JOHOR BAHRU

MID YEAR EXAMINATION 2009

SCIENCE

Form 1

Paper 2

One hour and thirty minutes

DO NOT OPEN THE QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO

1. This question paper consists of two sections: Section A and Section B.

2. Write your answer in the spaces provided in the question paper.

3. The diagrams in the question provided are not drawn to scale unless stated.

4. Marks allocated for each question or part question are shown in brackets.

5. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes.

6. You may use a non-programmable scientific calculator.

7. Hand in your entire answer sheet at the end of the examination.

SectionQuestionnumber

Marksallocated

Marksobtained

A

1 6

2 8

3 5

4 7

5 7

6 7

B

7 8

8 12

Section A + Section B

________________________________________________________________________This question paper has 12 printed pages including front page

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1 S / T / F / J / B

Electronic balance Compression balance Spring balance

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Section A[40 marks]

Answer all questions.

1. Diagram 1 shows some examples of measuring instruments.

Diagram 1

(a) Which of the following instruments can be used to measure weight? Tick (√) the correct answer in the box provided.

[1 mark]

(b) Circle the instruments that can be used to measure mass.

[2 marks]

(c) State two other differences between mass and weight.

1. ________________________________________________________________

2. ________________________________________________________________[2 marks]

(d) If 10 science books weight 60 N on earth, what is the weight of each book on the moon? [The gravitational force on the moon is 1/6 of the gravitational force on Earth.]

__________________________________________________________________[1 mark]

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2. Diagram 2 shows an activity is carried out to measure the thickness of a test tube by using two measuring tools K and L.

Diagram 2

(a) Name the measuring tool K and L in the diagram above.[2 marks]

(b) Table 1 shows the results of the activity. Find the average of the measurements taken using tool K and L.

MeasurementsReading

1Reading

2Average

Diameter using tool K (cm)

2.1 2.2

Diameter using tool L (cm)

2.3 2.4

Table 1[2 marks]

(c) Calculate the thickness of the wall of the test tube.

[2 marks]

(d) State two other apparatus that can be measured by using the measuring tools as shown in the diagram 2.

1. ________________________________________________________________

2. ________________________________________________________________[2 marks]

3. Diagram 3.1 shows the structure of a plant cell.

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3

K: L:

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Diagram 3.1

(a) Name the labelled parts of Q and S in the space provided in Diagram 3.1.[2 marks]

(b) State the function of the parts P or R of the cell. Complete Table 2.

Part of the cell Function

Table 2[1 mark]

(c) Diagram 3.2 shows the structure of an animal cell.

Diagram 3.2

Give two differences between the plant cell and animal cell.

1. ________________________________________________________________

2. ________________________________________________________________[2 marks]

4. Diagram 4 shows some of the steps in the preparation of a slide of human cheek cells.

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P Q R S

Diagram 4

(a) Arrange the steps before step Q in sequence.

[3 mark]

(b) How is the specimen obtained from the human body.__________________________________________________________________

__________________________________________________________________[1 mark]

(c) In steps S, a drop of methylene blue solution is put on the glass slide. Explain why this is done.

__________________________________________________________________[1 mark]

(d) State the function of the filter paper in step Q.

__________________________________________________________________[1 mark]

(e) In step P, the cover slip must be lowered gently. Why?

__________________________________________________________________[1 mark]

5. Diagram 5 shows a system in the human body.

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5

Q

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Diagram 5

(a) On Diagram 5, label parts P, Q and R using the following words.

[3 marks]

(b) Name the system shown in Diagram 5.

__________________________________________________________________[1 mark]

(c) State the function of the system above.

__________________________________________________________________[1 mark]

(d) Name the main organ protected by structure P.

__________________________________________________________________[1 mark]

(e) Name a structure in the system above that helps in protecting the spinal cord.

__________________________________________________________________[1 mark]

6. Diagram 6 shows the different levels of organisation of cells in the human body.

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Pelvic girdle Skull Pectoral girdle

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Diagram 6

(a) Which in Diagram 6 shows the level of

(i) cell? __________________________________________________________

(ii) system? _______________________________________________________

(iii) organ? ________________________________________________________

(iv) tissue? ________________________________________________________

[4 marks]

(b) Complete the following flow chart to show cell organisation.

Cell System

[2 marks]

(c) Name the organ in Diagram 6.

__________________________________________________________________[1 mark]

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Section B[20 marks]

Answer all questions.

7. Diagram 7 shows five types of cells P, Q, R, S and T which are found in living organisms.

Diagram 7

(a) Look at the cells in Diagram 7.Based on your observations, state one characteristic of any four cells P, Q, R, S and T.

P: _______________________________________________________________

Q: _______________________________________________________________

R: _______________________________________________________________

S: _______________________________________________________________

T: _______________________________________________________________[4 marks]

(b) Classify cells P, Q, R, S and T into two groups based on their common characteristics. Write the letters of the cells belonging to each group.

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Commoncharacteristics

Letters of thecells

[4 marks]

8. A student carried out an experiment to study the effect of density of the medium on the weight of object Y The reading of the spring balance after the object Y was placed in distilled water, glycerol and petrol are shown in Diagram 8.1.

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P, Q, R, S and T

Group 1 Group 2

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Diagram 8.1

(a) State the variables in the experiment.

Manipulated variable

Responding variable

Controlled variable

[3 marks]

(b) Based on Diagram 8.1, record the readings of the weight of object Yin Table 3.

Medium Density / gcm-3 Weight of object Y / N

Distilled water 1.0

Glycerine 1.3

Petrol 0.7

Table 3[3 marks]

(c) Based on Table 8.2, draw a bar chart to show the weight of object Y in different medium.

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Weight of object Y / N

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[2 marks]

(d) Based on the bar chart in (c), what can be said about the weight of object Y in different medium?

__________________________________________________________________

__________________________________________________________________[1 mark]

(e) State one inference from the experiment.

__________________________________________________________________

__________________________________________________________________[1 mark]

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1

2

3

4

5

6

7

8

9

Types of medium

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(f) Object Y was placed in solution Z with a density of 1.6 gcm-3. Predict the weight of object Y.__________________________________________________________________

[1 mark]

(g) State the relationship between the density of the medium and the weight of object Y.__________________________________________________________________

__________________________________________________________________[1 mark]

-END OF QUESTION PAPER-

Prepared by; Checked by; Approved by;

…………………… Cik Norsilah kamaruddin Pn. Nor Sidah M Amin Mrs. Lim Sew Chu Science teacher Head of Science Panel Head of Science and Mathematics Department

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