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 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?
Which of the following can help reduce random errors? (1) Using more precise instruments (2) Repeating measurements and averaging (3) Calibrating equipment (4) All of the above
Which of the following is a random error? (1) Using a miscalibrated instrument (2) Fluctuations in room temperature (3) Not zeroing a balance (4) Reading the wrong scale
Which of the following is a way to minimize human error? (1) Use automated equipment (2) Provide clear instructions (3) Train experimenters (4) All of the above
Which of the following is an environmental error? (1) Using a dirty beaker (2) Changes in humidity (3) Misreading a scale (4) Faulty stopwatch
Fill in the blank: __________ error occurs when the same mistake is made in every measurement.
Fill in the blank: __________ errors are caused by flaws in the design or setup of the experiment.
Fill in the blank: Environmental errors can be minimized by conducting experiments in a __________ environment.
Fill in the blank: Errors that occur due to unpredictable changes in the environment are called __________ errors.
Is it possible to completely eliminate all sources of error in an experiment? Yes or No.
True or False: All errors in an experiment can be identified and corrected.
True or False: Human errors can be both random and systematic.
True or False: Instrumental errors are always caused by the person conducting the experiment.
