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WorksheetsMeasurement & Uncertainty
Total questions: 30
Worksheet time: 27mins
Which of these is NOT true for systematic errors?
They arise due to errors in the measuring instruments used.
Repeating the observations or increasing the sample size can eliminate them
They are reproducible inaccuracies that are consistently in the same direction.
They arise from the design of the study.
Systematic errors lead to a lack of:
accuracy in the measurement.
significant digits in the measurement.
precision in the measurement.
gradation of the measuring instrument
Random errors lead to a lack of:
accuracy in the measurement.
significant digits in the measurement.
precision in the measurement.
gradation of the measuring instrument
Repeated measurements of a quantity can reduce the effects of
both random errors and systematic errors
neither random errors nor random errors
random errors
systematic errors
How close a measurement is to the true value is called..
Accuracy
Precision
Significant
Estimate
This bullseye demonstrates...
High Accuracy & High Precision
High Accuracy & Low Precision
Low Accuracy & High Precision
Low Accuracy & Low Precision
length?
3.2 cm
3.12 cm
3 cm
3.219 cm
Which of the following is the answer for the problem with the correct number of significant digits?
23.91 x 12.861 = 307.50651
308
307.51
307.5
307
0.0025 x 1.41 = 0.003525
How many significant figures are in the measurement 0.0570 min?
2
3
4
5
Which of the following is a base unit
length
area
volume
A quantity that can be measured is a
base quantity
physical quantity
derived quantity
scalar quantity
what is the SI unit for length?
cm
m
km
mm
245 kmh-1
physical quantities that cannot be derived from other physical quantities are
base quantity
derived quantity
physical quantity
scalar quantity
what is the SI unit for mass?
g
kg
N
mg
which one is a derived quantity?
area
temperature
mass
electric current
how many zero does the prefix Tera has?
6
9
12
3
All of the following are base units of the SI system except:
kilogram
kelvin
meter
volt
The metric prefix for one one-thousandth is
mili
centi
kilo
mega
What is the temperature and uncertainty indicated by this thermometer?
24.1 ± 0.5 °C
24.05 ± 0.05 °C
24 ± 1 °C
28.0 ± 0.1°C
Which is the correct symbol of prefix of 10 -12?
f
p
G
M
State the order of magnitude of the following: 539
600
500
10 3
10 2
A number rounded to the nearest power of 10 is called:
Estimation
Orders of magnitude
Metric multipliers
Prefixes
True or False?
Zero error are random errors.
True
False
What is an outlier
something very different from the rest of the data
something very similar from the rest of the data
another name for best value
another name for uncertainty
