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 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 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?
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 measures the temperature of a solution with a thermometer that always reads 2°C higher than the actual temperature. What type of error is this? (1) Random error, (2) Systematic error, (3) Human error, (4) Zero error
A student records the mass of a sample as 5.2 g, 5.3 g, and 5.1 g in three trials. What type of error is most likely present? (1) Systematic error, (2) Random error, (3) Zero error, (4) No error
A student measures the temperature of a solution with a thermometer that always reads 2°C higher than the actual temperature. What type of error is this? (1) Random error, (2) Systematic error, (3) Human error, (4) Zero error
A student records the mass of a sample as 5.2 g, 5.3 g, and 5.1 g in three trials. What type of error is most likely present? (1) Systematic error, (2) Random error, (3) Zero error, (4) No error
A student uses a stopwatch with a slow reaction time. What type of error is most likely introduced? (1) Random error, (2) Systematic error, (3) Environmental error, (4) Calculation error
Which of the following best describes a zero error? (1) The instrument reads zero when it should, (2) The instrument does not read zero when it should, (3) The experimenter makes a calculation mistake, (4) The sample is contaminated
Fill in the blank: ________ error occurs when the same mistake is repeated in every measurement.
Fill in the blank: ________ errors are caused by unpredictable fluctuations in experimental conditions.
Fill in the blank: ________ errors are often due to carelessness or lack of attention.
Fill in the blank: ________ errors can be detected and corrected by calibration.
True or False: All errors in experiments can be completely eliminated.
True or False: Environmental factors such as temperature and humidity can introduce errors in biological experiments.
True or False: Human error can be completely eliminated from experiments by using automated equipment.
True or False: Instrumental errors are always due to faulty equipment.
