8/13/2019 Controlling Variables Year 5

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PROGRAM MOTIVASI UPSR SAINS

CIKGU SADUN BIN MATNOR

CONTROLLING VARIABLES : YEAR 5

1. The bar chart below shows the result of a fair test on the growth of microorganisms onfood.Number of mould

spots on the bread20 ..................................................................

16 ..................................................

12 ...................................

8 ......................

4 ........

1 2 3 4 5 Week a) In this inestigation! state...

i) what is obsered

"""""""""""""""""""""""""""""""""""""""""""""""""""""""

ii) what is changed

"""""""""""""""""""""""""""""""""""""""""""""""""""""""

iii) what is #e$t the same

"""""""""""""""""""""""""""""""""""""""""""""""""""""""

2. The figure shows the a$$aratus and results of an inestigation to stud% the relationshi$between the direction of a source of light and the length of the shadow formed.

a) In this inestigation! state

i) what is being changed"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

ii) what is being measured """""""""""""""""""""""""""""""""""""""""""""""""""""""""""

ii) what is #e$t the same

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8/13/2019 Controlling Variables Year 5

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PROGRAM MOTIVASI UPSR SAINS

CIKGU SADUN BIN MATNOR

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

3. & grou$ of $u$ils carried out an inestigation on dr%ing a $iece of cloth. Table 1 showsthe result of the inestigation.

Tem$erature ofsurrounding ' o( ) 30 40 50 60

Time ta#en for the cloth todr% ' hours) 5 4 3 1

Table 1

a) ased on the inestigation aboe! state* i) +hat is changed ,

""""""""""""""""""""""""""""""""""""""""""""""""""

ii) +hat is obsered,

""""""""""""""""""""""""""""""""""""""""""""""""""

iii) +hat is #e$t the same , """"""""""""""""""""""""""""""""""""""""""""""""""

4. Table 1 shows the obseration about the shadow formation of ob-ect .

Time 8.00 a.m. 10.00 a.m. 12.00 $.m. 1.00 $.m.

/irection of shadow +est +est etweenwest and

east

ast

ength of shadow 'm) 3 1 3

Table 2 a) In this inestigation! identif% what is...

i ) change """"""""""""""""""""""""""""""""""""""""""

ii ) obsere """"""""""""""""""""""""""""""""""""""""""

iii ) e$t the same """"""""""""""""""""""""""""""""""""""""""

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PROGRAM MOTIVASI UPSR SAINS

CIKGU SADUN BIN MATNOR

5. & $u$il intends to inestigate the stabilit% of 4 to% cars when the% moe around a bend.The to% cars! shown in the figure! hae the same base areas but different heights.

a) tate two information that can be gathered in this inestigation.

i) """"""""""""""""""""""""""""""""""""""""""""""""

ii) """"""""""""""""""""""""""""""""""""""""""""""""

b) In the inestigation! what is #e$t the same ,

""""""""""""""""""""""""""""""""""""""""""""""""""

Answers: CONTROLLING VARIABLE YEAR 5

1.

a) i) Number of mould spots on the bread

ii) Number of week

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PROGRAM MOTIVASI UPSR SAINS

CIKGU SADUN BIN MATNOR

iii) Types of bread

2.

a) i) the position of a source of light

ii) the length of the shadow formed.

iii) The height/ shape of the wooden block

3.

a) i) temperature of surrounding

ii) time taken for the cloth to dry.

iii)Types of cloth/thickness of cloth

4.a) i) Time of inestigation / period of time

ii) !irection of shadow and length of shadow

iii) "ength of pole / place of inestigation

#.

a) i) the height of the toy cars

ii) the stability of the toy cars.

b) the base area of the toy cars.

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