Uploaded by Olivia Tjeuw

variables

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No
Scientific Questions
Independent Variable
(the variable that you change)
1
Can the
chocolate melt if
we heat it?
2
3
4
Dependent Variable
(the variable that you
measure)
Control Variable
(the variable that you kept the same )
The temperature to
melt the chocolate bar
NO DV
The same size of chocolate
The same weight of chocolate
The same type of chocolate
How long the ice
cube will melt?
NO IV
THE TIME NEEDED FOR
THE ICE CUBE TO MELT
The same size of ice cube
The same shape of ice cube
Time to do the experiment
tool to melt the ice cube
Does changing
the amount of
ice cube will
affect how long it
will melt?
Does the size of
candle affect
how long it will
melt?
The amount of
ice
Time
The same size , shape
of ice cube, starting
time to start the
experiment
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No
Scientific Questions
1
How does the size
of a dog affect how
much food it eats?
2
Does the
temperature of
water affect how
quickly it freezes?
3
Does changing
the amount of
ice cube will
affect how long it
will melt?
Independent Variable
(the variable that you change)
Dependent Variable
(the variable that you
measure)
Hypothesis
(If....then....because...)
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Imagine that you design and conduct an experiment based on
your hypothesis that adding fertilizer to soil allows more plants to grow. You
find that in the soil with fertilizer, more plants grew than in the soil without
fertilizer.
Sq:
IV :
DV:
CV :
Hypothesis : If ....IV ....then ......, because
( find the background research about this before)
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Imagine that you design and conduct an experiment based on
your hypothesis that adding fertilizer to soil allows more plants to grow. You
find that in the soil with fertilizer, more plants grew than in the soil without
fertilizer.
Sq:
 Does adding the fertilizer can make the plant grow taller?
 Does adding the fertilizer can affect the plant growth? The number of
leaves or the height of the stem=> 2 DV
IV :
adding the fertilizer ( with and without fertilizer)
DV:
1. number of the plant or bud that sprout
2. the height of the plant
CV :
the type of the plants, the type of soil and the amount of water, the amount of soil,
the age of the plant
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Hypothesis : If we add the fertilizer then plant will
grow taller or has more number of leaves, because
the fertilizer give more nutrient to the soil that can
improve the plant’s growth ( find the background
research about this before)
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Variables : The factors in an experiment that can be changed
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Example of variables would be : changing the temperature, the amount of light
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