Sources of Error in Experiments
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Sources of Error in Experiments starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Sources of Error in Experiments.
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See sample questions for grade 11
A student consistently adds 1 mL extra water to each test tube. What type of error is this?
A student forgets to zero the balance before weighing a sample. What type of error does this introduce?
A student records the time for an enzyme reaction as 30 s, 32 s, and 31 s. Calculate the mean time.
A student records the volume of a liquid as 25.0 mL, but the actual volume is 24.5 mL. What is the absolute error?
A student uses a pH meter that has not been calibrated for several months. What type of error is most likely to occur?
A student uses a ruler with worn-out markings to measure plant growth. What type of error is most likely to occur?
Describe how temperature fluctuations can affect the outcome of a biological experiment.
Describe one way to minimize random errors in a biology experiment.
Describe the difference between accuracy and precision in the context of experimental errors.
Explain how parallax error can affect the accuracy of measurements in biology experiments.
Explain how using different brands of reagents in repeated trials can introduce errors.
Explain the impact of using expired chemicals on the results of a biological experiment.
Explain why it is important to record all observations, even if they seem like errors, during an experiment.
Explain why repeating an experiment is important for identifying sources of error.
Explain why using dirty glassware can be a source of error in an experiment.
