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Section B

( 20 marks )

Answer all questions.

Write your answers in the spaces provided.

1 Ravi and his friends carried out an investigation at the Zoo Negara about the

relationship between the number of monkeys and the number of bananas eatenby the monkeys.

The observations are recorded in the table below :-

Number of monkeys 1 2 3 4 5

Number of bananas

eaten by the monkeys

6 12 17 21 X

( a ) What is the trend of the numbers of bananas eaten by the monkeys ?

( 1 mark )

( b ) Predict how many bananas will be eaten if there are five monkeys ?

( 1 mark )

( c ) Make a conclusion based on the experiment

( 1 mark )

( d ) . How do these animals protect themselves from enemies ?

( 1 marks )

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2 Four different pendulums are used in an experiment as shown below.

Table above shows the numbers of swings each pendulum makes in oneminute.

Pendulum Length ( cm ) Number of swings

in 1 min

P 40 34

Q 30 37

R 20 41

S 10 46

a) What is the aim of the experiment ?

( 1 mark )

b) State the following :-

ii) Things to change :

ii) Things to observe : .( 2 marks )

c) Write a correct statement relating the length of pendulum and the number of

swings.

P

Q R

S

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( 1 mark )

3 Hakim carried out a test to find out the best way to keep things hot.

Hakim prepared the following test.

After 4 hours he got the result as shown below.

Glass

Condition of water

Beginning After 4 hours

A Hot Cool

B Hot Warm

C Hot Hot

a) i. Based on the experiment, what is the best material to keep the water

hot ?

ii. Give your reason.

( 2 marks )

b) If Hakim has no polystyrene, how can he keep the water hot ?

( 1 mark )

d) Youare going for a picnic. How do you keep your cold drinks

stay cold ?

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( 1 mark )

4 The following figure shows Fitri swinging a metal ball that was tied to a

string of 30 cm in length.

He counted the number of complete swings within one minute. He repeated

the same activities with a string with 50 cm and 70 cm in length.

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Table below shows the result.

Length of string Numbers of complete swing in

one minute

30 cm 60

50 cm 50

70 cm 40

a) Predict the number of complete swing if the length of the string is60 cm.

.

( 1 mark )

b) State one thing that must be kept the same in this activities.

( 1 mark )

c) What can be stated about the path of the metal ball when Fitri

change the length of the string ?

.( 1 mark )

d) If the metal ball is assume as a planet, what will Fitri be

represent as ?

..

( 1 mark )

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5 The figure shows three boxes A, B and C with the same weight.

Azim pushed the boxes using different devices. Then he recorded the

distance of the movement made by the boxes.

The following table shows the distance of the boxes movement.

Box DeviceThe distance of the

movement.

AWooden

block13 cm

Bwooden roller 80 cm

C Trolley roller 210 cm

a) What must be changed in this test ?

..

( 1 mark )

b) State two things that use device as box C in our day life .

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i) ..

ii) ..( 2 marks )

d) What is the purpose ( aim ) of the test ?

..( 1 mark )