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.
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See sample questions for grade 10
A biology class is measuring the growth of plants. Some students record the height from the soil surface, while others measure from the bottom of the pot. What type of error does this introduce?
A student consistently reads the meniscus from above rather than at eye level. What type of error does this introduce?
A student forgets to zero the balance before weighing a sample. What type of error does this introduce?
A student measures the temperature of a solution using a thermometer that always reads 2°C higher than the actual temperature. What type of error is this?
A student records the mass of a sample as 5.0 g, but the actual mass is 5.2 g. What is the absolute error?
A student records the time for a reaction as 30 seconds, but the stopwatch started 2 seconds late. What is the actual reaction time?
A student uses a ruler with worn-out markings to measure the length of a leaf. What type of error is most likely to occur?
Describe how environmental factors can affect the outcome of a biology experiment.
Describe how parallax error can be avoided when taking measurements.
Describe one example of a random error in a biology experiment.
Describe the difference between random errors and systematic errors.
Explain the importance of using control variables to minimize sources of error.
Explain why it is important to identify sources of error in an experiment.
Explain why it is important to report sources of error in a scientific report.
Explain why repeating an experiment and averaging the results can help reduce the impact of random errors.
What is a source of error in a scientific experiment?
