Instrument Precision Worksheet
A Grade 10 Science worksheet focusing on understanding and calculating instrument precision, significant figures, and measurement uncertainty.
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Instrument Precision Worksheet
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Read each question carefully and answer to the best of your ability. Show all calculations where necessary.
1. Which of the following best describes the precision of a measuring instrument?
How close a measurement is to the true value.
The consistency of repeated measurements.
The smallest unit an instrument can measure.
The range of values an instrument can measure.
2. A student measures the length of a pencil three times and gets 15.2 cm, 15.3 cm, and 15.2 cm. The actual length of the pencil is 16.0 cm. Which statement is true regarding the student's measurements?
They are accurate but not precise.
They are precise but not accurate.
They are both accurate and precise.
They are neither accurate nor precise.
3. The of a measurement refers to how close the measured value is to the true value.
4. The number of significant figures in a measurement reflects the of the measuring instrument.
5. Explain the difference between accuracy and precision in scientific measurements.
6. All non-zero digits are considered significant figures.
True
False
7. Leading zeros (zeros before non-zero digits) are always significant.
True
False
8. Determine the number of significant figures in each of the following measurements:
a) 0.0034 g
b) 12.00 mL
c) 1500 kg
d) 9.10 x 10^3 m
9. A student measures the diameter of a coin using a ruler marked in millimeters. The measurement is 2.45 cm. What is the uncertainty in this measurement?