Download - DEPENDENT & INDEPENDENT VARIABLES
UNDERSTANDING DEPENDENT
& INDEPENDENT VARIABLES
CHAPTER 0NE: INTRODUCTION TO
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CIRCUS OF EXPERIMENT
Objectives
To recap and ensure that the independent and dependent variables are placed correctly for a
range of experiments in tables.
To record data from an investigation.
Starter ActivityDo plastic bags of different colours have the
same strength
Learning is fun when behaviour is good
Do different types of plants grow to the same size
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Does ice melt quickly or slowly in water at different temperatures
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DEPENDENT VARIABLE
In an experiment that which is supposed to be changed by
the independent.
INDEPENDENT VARIABLE
In an experiment that which is supposed to be manipulated by
you. The variable manipulated by the
experimenter.
On a simple X-Y coordinate line graph the independent variable is always on
the X-axis.
DATA ANALYSIS
List two independent variables that could affect how quickly or slowly the ice will
melt. Why are the variables independent?
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YOUR TASK
Independent Variable: A variable in an experiment which is altered by the
experimenter.
Write down a list of variables that will be altered by you if asked to
investigate:
Photosynthesis in plants
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MOVEMENT OF OBJECTSYou are investigating the movement of objects on ramps. What variables will you change? And what variable will you keep
the same?
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Electromagnets
How To Make an Electromagnethttp://www.youtube.com/watch?v=ckSNA0MlcBE
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Investigating Factors Affecting the Time Taken For Indigestion Tablet To Dissolve
Can you plan this experiment and draw a table with two columns and write down the
variables on either side of the columns.
YOUR TABLE
Dependent Variable Independent Variable
Explain why the variables you have chosen are dependent and independent