SCIENCE section B

8/7/2019 SCIENCE section B

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QUESTION 1

A group of pupils carry out an investigation. They put the same

number of fish with the same size in each identical aquarium X

and Y. the size of the fish after one month is shown in the

following diagram.

a) State one reason to explain the difference in condition of the

fish in aquarium X and Y after one month.

b) Write one observation to support your reason in (a).


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c) What is kept the same in the investigation? State one of them.

d) Write one relationship based on the statement above.

The size of the fish also depends on the cleanness

of the water.


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QUESTION 2

An investigation is being carried out by a group of pupils asshown in the diagram above.

a) Give one observation based on the investigation

b) State two possible reasons for what you have observed.c) Write one hypothesis based on the answer in (b).

d) Based on the answer in (c), state;

i) what is changed:

ii) what is measured:


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QUESTION 3

Three identical young seedlings were transfer into threeidentical containers as followed. Diagram shows the condition

of the plants after two weeks.

a) Give reason why the plant in container C bigger than the

others.

b) Give another observation based on your reason in (a).

c) State two information gathered based on the investigation.


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d) State;

a) what is changed:

b) what is measured:

e) What conclusion can be made based on this investigation


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QUESTION 4

Table shows the result of an investigation by Nazurah. Four potswith same size, pot K, L, M and N are planted with different

number of seedling. All pots have the same basic needs. The

number of leaves in each pot is shown below.

a) State a reason the number of leaves for pot L from the

investigation given.

b) State what is kept the same.

Pot Number of seedlings Number of leaves

K 2 12

L 3 11

M 5 9

N 7 7


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QUESTION 4

c) State the trend for the number of the leaves

d) Predict the number of leaves if the number of seedlings is 6.

e) What conclusion can be made based on the investigation.


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QUESTION 5

Three identical trolleys labelled P, Q and R were used in aninvestigation to determine the effects of weight on frictional

force. A weight of 250 g was placed on top of trolley P which

was then let go from the top of an inclined plane as shown in

Diagram 1. The activity was repeated by placing different

weights on trolley Q and R. Table 1 shows the time taken by

each trolley to reach the bottom.


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QUESTION 5

Table 1a) What is the purpose (aim) of the investigation?

b) State one variable that is kept the same in this investigation.

c) State;

i) what is changed:


d) State the relationship (hypothesis) between the variable that

is changed and the variable that is measured.

e) State two factors that affect the friction produced by the

trolley.

Trolley P Q R

Weight on trolley (g)

Time taken to reach the

bottom (s)

1 16


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QUESTION 6

A wooden block is placed on a cement floor. The block is givena push and moves a distance of 22 cm before coming to a stop.

Some water is then poured onto the floor. The block is pushed

with the same force. The block moves a distance of 38 cm this

time.


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QUESTION 6

a) What is the purpose (aim) of this investigation?

b) State one variable that is kept the same in this

investigation.

c) State;

i) what is changed:


d) Give one reason (inference) to explain why the block moved

further on the wet floor.

e) Predict the distance travelled if oil is poured onto the floorinstead of water.


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QUESTION 7

A metal block wall pulled by different weights as shown in

Diagram 2. The distances travelled by the block are recorded.

a) State;

i) what is changed:



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QUESTION 7

b) What is the trend of change in the distance travelled by theblock?

c) What can be observed when no weight acts on the block?

d) State one reason (inference) to explain why the block does

not move when the 5 N weight is used.

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