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INSTRUCTIONS

Read the following carefully:

1.

This paper consists of two (2) sections. There are forty (40) Multiple Choice questions in Section I and six (6) Structured questions in Section

II.

2.

Fill in the following information on the Multiple-Choice answer

sheet

using a 2HB pencil only (if it has not been completed already):

-

School's Name School's ID Student's Name Student's Number Date of Birth

3.

Attempt all questions in Section I. Record your answers on the Multiple Choice answer sheets provided.

4.

Answer all questions in Section II in the spaces provided in this booklet.

5.

You should spend approximately fifty (50) minutes on Section I and forty (40) minutes on Section II.

6.

On the Multiple Choice answer sheet DO NOT o Write anything on the top and sides . Staple o Punch holes o Tear o Make stray marks

7.

complete the following on the cover of this test bookret:

8.

-

Student's Name

-

Student's Number

-

School's Name

-

School's ID

If you are finished before time is called, go back and check your.rork.

SECTION

I

MULTIPLE CHOICE There are forty (40) questions in this section with four (4) options A, B, c, and D. You are required to answer ALL questions. Select only ONE (1) option.

l.

Which of the following is a unicellular organism?

4.

A. Virus B. Yeast C. Fungus D. Bacterium

A. Virus B. Fungus C. Bacterium D. Mushroom 2.

Which organism causes the disease AIDS?

In which part of the cell does respiration takes place?

5.

Which of the following is a mixture'/

A. Iron B. Bronze C. Copper D. Ammonia

mitochondnon

vacuole

6.

The test for carbon dioxide is that it

nucleus

chloroplast

A. B. C. D.

A. nucleus B. vacuole C. chloroplast D. mitochondrion 3.

Which of the following causes food to spoil after leaving it for a few hours on a table? The

A. moisture in the air. B. air around the food. C. heat in the environment. D. micro-organisms in the food.

relights a glowing sPlint. gives a white precipitate with limewater. makes a pop with a lighted splint. has no reaction on limewater.

When powdered chalk is added to water and stirred the resulting mixture

isa

A. gel. B. colloid. C. solution. D. suspension.

Questions 8 and 9 are based on the following diagram which represents a food web.

I

l. Which planet is nearest to the Sun?

A. Earth B. Jupiter C. D.

Mercury Neptune

t2. Which of the following apparatus is used to measure volume?

Energy fr6m the sun

8.

A.

Measuring cylinder

Which box represents producers?

A.W

B.X C.Y

D.Z 9.

rrlirililiJrr{i:rrllirlJ:ljlJij.frJi!riJ;rlii;r1:jljjttfr{i,rtrtJiJiirttlrriirill

B.

Metric rule

Which box represents primary consumers?

A.W

B.X C.Y

D.Z

C.

Stop clock 10. The

power supply to your home is

measured in

A. volts. B. amperes.

C. D.

coulombs. kilowatts.

D.

Triple beam balance

13. In the circulatory system valves present in

the

are

17. Which of the following energy source causes the LEAST pollution in the environment?

A. veins. B. arteries. C. capillaries. D. blood vessels.

A. coal B. wind C. nuclear D. natural sas

14. The energy conversion that takes place

18. Obesity can occur because of

when a computer is switched on is: electrical energy is converted to

A. overeating. B. heavy smoking. C. excessive alcohol. D. not enough exercise.

A. light, sound and heat energy. B. chemical, sound and light energy. C. light and sound energy only. D. sound and heat energy onlY.

19. The table below shows the results of food tests carried out on a sample food.

15. The following is a word equation for photosynthesis.

X*

sunlisht

water

Test lodine solution added

What do X and Z rePresent?

Benedict's solution added and mixture

Z

X A.

Oxygen

Carbon dioxide

B.

Carbon dioxide

Oxygen

C.

Chlorophyll

Oxygen

D.

Chlorophyll

Carbon dioxide

of

Observations Blue, Black colour Blue colour

heated Shaken with ethanot

Clear solutions

The nutrient present in the food sample is

A. fat. B. glucose. C. protein. D. starch.

16. The part of the plant that carries food from the leaves to other parts of the plant is the

A. root. B. xylem. C. phloem. D. stem.

4

20. When common salt is added to water and stirred the result is a

24.

A physical change

A.

A. suspension. B. colloid. C. mixture. D. solution.

B. C. D.

21. Perfume was sprayed in one comer of a room, but the scent was detected all over the room. The process which best explains this is

is

temporary, reversible and a new substance is formed. temporary, reversible and no new substance is formed. temporary, irreversible and a new substance is formed. lemporary. irreversible and no new substance is formed.

25. In which of the following pairs of magnets would attraction occur?

A. osmosis. B. diffusion. C. brownian motion. D. reverse osmosis.

N

S

N

S

II

N

S

S

N

III

S

N

N

S

IV

S

N

S

N

22. Nail polish remover which dissolves

nail polish from Beth's nails is a

A. solute. B. solvent. C. solution. D. suspension.

A. B. C. D.

z)- The gas necessary for combustion to take place is

A. oxygen. B. nitrogen. C. hydrogen. D. helium.

26.

I and II II and III III and IV I and IV

If atmospheric

pressure is 100 Pa, what is the force exerted by the atmosphere on a rectangular surface that measures 0.8 m by 0.5 m?

A. B.

4.0 N

c.

40N 250 N

D.

400 N

27. Heat is transferred from the Sun to the

30. The SI unit used to measure a person's height is

Earth by

I il III

A. metre. B. kilometre. C. millimetre. D. centimetre.

Conduction Convection Radiation

A. I only B. I and II C. II and III D. I, II and III

31. The ozone layer is important to earth because it

A.

28. All of the following are important safety practices when using appliances in a kitchen EXCEPT

A. B. C. D.

B. C.

locating the power cord away from a heat source. placing the appliance away from water. using several appliances on the same electrical outlet. using the appliance with an extension cord.

D.

life on

greatly increases the amount of ultraviolet radiation. forms a protective shield to keep the earth waffn greatly reduces the amount of ultraviolet rays that reach the earth's surface. prevents acid rain.

32. Which of the followine is a greenhouse gas?

A. Sulphur dioxide B. Carbon dioxide C. Water vapour D. Nitrogen

29. The list that contains only components shown in the circuit diasram below is

aa JJ.

A typical response of the eye in dim light is the

A. B. C. D. A. ammeter, cells, wire, bulb. B. battery, wire, voltmeter, ammeter. C. cell, wire, resistor, ammeter. D. resistor, wire, voltmeter, ammeter. 6

cilary muscle contracts. cilary muscle relaxes. muscles in the iris increases the size of the pupil. muscles in the iris decreases the size of the pupil.

34. Global warming

can be prevented

by

37. A material that does not allow light to through it is described as

A. planting trees. B. cutting down trees. C. increase combustion of fuels. D. burning of waste. 35. One characteristic of

an alkali is that

A' opaque' B. translucent' C' transparent' D. florescent. it

38. A list that contains luminous objects ONLY is

A. is not corrosive. B. turns red litmus PaPer blue. C. does not dissolvi in water. D. tums blue litmus paper red.

A' diamond' mirror' moon' B. fire, light bulb, mirror. C. light bulb, fire, sun. D. sun. moon, fire.

36. The electric force between charged objects is

A. repulsive onlY. B. attractive onlY. C. either attractive or repulsive. D. neither attractive nor repulsive. the colour of Universal indicator paper euestion 39 is based on the table below showing with the range of pH values.

Colour

Red

pH range

I

2

Orange Green 34 56789

39. What is the colour of the Universal indicator is added to it?

A. Red B. Blue C. Green D. Orange

Violet

Blue

l0

1l

t2

13

T4

paper when a few drops of lemon juice

40. which oNE of the d.iagrams shown below represents diverging rays?

_/

--t' II

-ttt-/ III

A. I B. II C. III D. IV

IV

II

SECTION

There are SIX (6) questions in this section. Answer ALL questions in the spaces provided. l.

Table I below shows the organs in the human body and their excretory products. Complete Table 1 by placing the name of the correct organ or product in the spaces. (a)

Excretory Product

Organ

Water vapour

Kidney

Skin

Table

(b)

I

(3 marks) Water is a common solvent for substances to dissolve. Josh has two unknown substances X and Y and performed the following activities on them. He continuously adds small quantities of X to water and stirs. water. He then filters the resulting mixture.

X dissolves in the

He continuously adds small quantities of Y to water and stirs. There were small particles of Y in the mixture. He then filters the resulting mixture. Use the information obtained from the activities above to complete Table 2.

Observation

t"*,J" "*

Substance Y and

water

Appearance of mixture (clear/cloudy) Residue on filter paper (YesrNo)

Solubility (soluble/insoluble) Table 2 9

(3 marks)

(c)

s

ra

Figure I Figure

(i)

I

shows pollution of water from an agricultural village located near the sea.

state Two ways in which the water can be polluted from homes in the agricultural village.

l.

2.

(2 marks)

(ii)

Suggest TWO ways in which the water pollution can be reduced in this

village.

l.

2.

(2 marks) Total l0 marks

l0

2.

Figure 2 below is an illustration showing a butterfly located in front of Jane's eye.

s, Butterfly

Figure 2 (a)

Name the type of lens found in her eye.

(l mark)

(b)

Draw a ray diagram in Figure 2 above to show how light es from the butterfly through the lens of the eye thereby allowing Jane to see the butterfly clearly. (2 maI

(c)

Describe how the shape of the lens in the eye changes when Jane is looking at the butterfly situated far from her eye.

(l (d)

mark)

of the butterfly with a camera. In Table 3 below state THREE similarities in the functioning of the eye to that of the camera.

Jane took a photograph

Eye

Camera I

ll lll Table 3

ll

(3 marks)

(e)

Jane looked up in the sky and saw a rainbow.

(i)

How many colours would she see in the rainbou'?

(1 mark)

(ii)

state

Two

changes that take place to the light to produce the rainbow.

l.

2.

(2 marks) Total l0 marks

12

3.

Figure 3 below shows an animal cell and a plant cell.

Plant cell

Animal cell Figuls

(a)

3

State THREE similarities between the animal cell and the plant cell.

I.

2.

a

J.

(3 marks)

1a IJ

(b)

State THREE differences between the animal cell and the plant cell.

Animal Cell

Plant Cell

i

ll

lll

(3 marks)

Table 4

(c)

Use the words in the box below that relates BEST to the statements siven. Each word can only be used ONCE.

Chloroplast, Osmosis,

Diffusion,

(i)

Occurs when dried fruits are swollen in water

(ii)

Controls the function of cells

Nucleus

(iii) Is required for photosynthesis (iv)

Occurs in gaseous exchange in organisms

(4 marks) Total l0 marks

t4

4.

Figure 4 shows a model of an atom using coloured balls made by Mr. Browne to demonstrate the strucfure of an atom.

gleen

red

red

Figure 4

(a)

In Table 5 state the parts of the atom that the balls represent?

Parts of the atom

Colour balls Red

Blue Green

Table 5

(b)

(3 marks)

Name the part of the atom that the cluster of blue and green balls in the centre represents.

(1 mark)

l5

(c) (i)

Complete the following general word equation

Acid +

Alkali

Salt

+

-+ (ii)

(1 mark)

Mary used sodium carbonate to remove tea stains in her teacups. Name the type of reaction that occurs between the tea stain and the sodium carbonate.

(1 mark)

(d)

Below is a list of substances. Magnesium Chloride Mercury Magnesium Oxide Carbon Monoxide Oxygen Ammonia

(i)

From the list above, name

MgCl2 Hg MgO CO Oz

NH.

Two

substances that are elements.

L 2.

(2 marks)

(ii)

From the list above, name TWO substances that contain covalent bonds.

l. 2.

(2 marks) Total 10 marks

t6

5.

Forces acting on an object can result in the object remaining at rest or moving in a

particular direction.

(a)

Team

A and Team B participated in a Tug-of-War on Sports Day.

Team A

Team B

Figure

5

Team A is pulling the rope with a force of 60N. Team B is pulling the rope with a force of 45N.

(i)

In which direction would the rope be pulled?

(ii)

Explain your answ-ei.

(2 marks)

(b)

Explain the scientific principles involved in the following activities.

(i)

Susan stretched a rubber band until

it burst.

(2 marks)

t7

(ii)

John moved forward when the car he was in stopped suddenly.

(2 marks)

(iii)

A car with smooth tyres skids on a wet road.

(l mark)

(c)

Nick pushes a lawn mower along Side A and Side B of his lawn, with the same force as seen in Fieure 6 below.

T

Il2m

LAWN

I

t'0.

"

I

l_ Side

A

Figure 6

(i)

on which side of the lawn, A or B, does Nick do more work when he pushes his lawn mower once? Give a reason for your answer. Side

(2 marks)

l8

(ii)

Calculate the work done when Nick pushes the lawn mower along Side A with a force of 15N.

(1 mark) Total l0 marks

6.

Figure 7 below shows the structure of the human digestive system.

(a)

In Figure 7 below write on the dotted lines, the name of structures A, B and C. (3 marks)

A B

Figure 7

t9

(b)

Food is broken down into simpler substances by chemical changes taking place during digestion. Complete Table 6 below, by giving the end product when the following foods are digested.

End product after Digestion

Food Bread

Chicken

Butter Table

(c)

(3 marks)

6

Tara's daily diet consists of the following nutrients.

Nutrients

Amount per/100g

Protein

Ro

Carbohydrate

5oe

l5o

Fat

--D

?o

Added salt

(i)

Tara is suffering from the deficiency diseases, goitre and anaemia. what nutrients are missing from her diet that result in goitre and anaemia? Goitre Anaemia (2 marks)

(ii)

what would be the result on Tara's health in consuming the following? Too much table salt Too much fat (2 marks) Total 10 marks

END OF TEST 20