GCSE Combined Science
Working Scientifically
40 questions4 subtopicsAQAEdexcelEduqasOCRWJEC
What's covered
Experimental design10
Graphs and data analysis10
Mathematical skills10
Uncertainty and error10
Sample questions
A taste of the 40 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
1Experimental design
What is the independent variable in an experiment?
- •the variable kept constant throughout
- •the variable most likely to produce error
- ✓the variable you deliberately change
- •the variable you measure as the outcome
2Graphs and data analysis
What is a line of best fit?
- •A line drawn through only the first and last data points
- •A line joining every data point in order
- ✓A line or curve passing as close as possible to all points
- •A line that passes through the origin only
3Mathematical skills
What is 0.08462 rounded to 2 significant figures?
- •0.08
- •0.084
- •0.0846
- ✓0.085
4Uncertainty and error
What is a random error?
- •a consistent shift in all readings caused by faulty equipment
- •a mistake that only affects the first measurement in a series
- •an error resulting from misreading the scale on an instrument
- ✓unpredictable variation affecting results differently each time
5Experimental design
What is the dependent variable in an experiment?
- •the variable kept constant throughout
- •the variable most likely to introduce error
- •the variable you deliberately change
- ✓the variable you measure
6Graphs and data analysis
What is an anomalous result on a graph?
- ✓A point that does not follow the trend of the others
- •A result recorded with fewer significant figures
- •Any result that lies exactly on the line of best fit
- •The largest or smallest value in a dataset
Try it for four weeks. Free.
One school. Unlimited classes. No card limit. No teacher limit. If your students aren't practising daily by the end of the trial, you owe us nothing.
More GCSE Combined Science topics
ForcesEcologyElectricityWavesQuantitative ChemistryInheritance, Variation & EvolutionOrganisationEnergyRequired PracticalsAtomic Structure and the Periodic TableChemical ChangesMagnetism and ElectromagnetismBonding, Structure and the Properties of MatterInfection & ResponseParticle Model of MatterHomeostasis & ResponseCell BiologyOrganic ChemistryUsing ResourcesChemistry of the AtmosphereAtomic StructureChemical AnalysisRate and Extent of Chemical ChangeEnergy ChangesBioenergetics