Independent variable - The only factor in an experiment which is changed by the scientist to find out what effect the change has., Dependent variable - This variable depends on the independent variable i.e. it is what is being measured., Control variables - These are all the factors that the scientist keeps the same so that only the variable being changed (Independent) is causing the observed result., Aim - The question that the scientist is trying to answer., Hypothesis - This is a prediction of what the scientist thinks will happen as the independent variable is changed., Control - It is the exact same experiment setup without the independent variable - it can be used to prove that the independent variable is causing the effect as without it there is no effect., Method - A diagram and/or description of the procedure used to carry out the experiment. , Results - Usually presented as a table., Conclusion - This tells us if our results have proven our aim/hypothesis. , Evaluation - A reflection on our experiment and how we can improve it. , Validity - You can ensure this by only changing one variable and keeping everything else the same. , Reliability - You can ensure this by repeating the whole experiment and taking an average. , Random error - Uncontrollable errors, Systematic error - Identifiable errors which can be fixed,

Investigation terms

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