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5 cards from this section. Quick, good the night before a test.
What is the precision of a meter stick?
Think about the scale units on the meter stick.
Which tool is more accurate: a ruler or a vernier caliper?
Remember the precision levels discussed.
What is the precision of a vernier caliper?
Remember that a caliper is more precise than a meter stick.
True or False: Random errors consistently affect every measurement.
Think about how different readings can vary.
A student measures the diameter of a small ball using both a meter stick (±1mm) and a vernier caliper (±0.1mm). The meter stick reads 50.0mm, while the vernier caliper reads 50.3mm. Which measurement is more reliable, and why?
Consider the precision of the instruments.
During an experiment, a researcher consistently measures the weight of a sample to be 2.5g using a faulty balance which has not been calibrated. If the true weight was actually 3.0g, identify this type of error and suggest a way to avoid it.
Think about how maintaining equipment can affect accuracy.
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