An investigation is carried out by a group of pupils. Two similar cages are prepared and labelled K and L. One chick is put in cage K while five chicks are put in cage L. All the chicks are of the same size and weight. Equal amount of food and water are supplied to the chicks every day. The observations after one month are recorded in the table below.
Cage
|
K
|
L
|
Average
weight of chicks ( g )
|
1 800
|
500
|
a) What is the purpose ( aim ) of this investigation ?
__________________________________________________________________
b) State
i) what is changed ( manipulated variable ) in this investigation.
___________________________________________________________________
ii) what is observed ( responding variable ) in this investigation.
___________________________________________________________________
c) State one relationship between the manipulated variable and the responding
variable.
___________________________________________________________________
d) What is kept the same ( constant variable ) in this investigation ?
_____________________________________________________________________
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