Reading Instruments With Significant Figures Worksheet
[Pages:5]Reading Instruments With Significant Figures Worksheet
Name: _______________________________________ Period: _________
Please read each instrument to their limits. Include units and correct number of SigFigs.
cm cm
C
C
C
mL
mL
mL
mL
mL
mL
kPa
psi
mm mm
K
K
C
mL mL
mL
mL mL
mL
mL
torr
kPa
cm
mL
cm
mL
mm
Reading Instruments with Significant Figures - Teacher Key
Notes: When explaining how Significant Figures work, discuss the importance of the number of place values in a measurement. The more place values, the greater the certainty in the accuracy of a measurement.
compare:
3 m
vs.
3.00 m
The second expresses confidence out to the hundredths place, where the first only has confidence to the ones place.
Using the worksheet: When reading an instrument, you will read as far as the graduations will allow. Then, you will estimate one final place value. This is called "the digit of guess" and can vary from student to student, due to it being an estimation.
On the worksheet's answer key, I've underlined my "digit of guess". I've also included how many significant figures (or SigFigs) your answer should have, so you know whether you are reading the instrument correctly or not.
For example:
One acceptable answer: 498.97 g
but another acceptable answer would be: 498.99 g
In either instance, both answers have 5 Significant Figures so on the answer key, it is written as: 498.97 g 5 SigFigs
Reading Instruments With Significant Figures Worksheet With Answers
Name: _______________________________________ Period: _________
Please read each instrument to their limits. Include units and correct number of SigFigs.
577.66 g 5 SigFigs
C
498.97 g 5 SigFigs
cm
7.70 cm
3 SigFigs
mL
cm
1.00 cm
3 SigFigs
31.7 mL
C
C
3 SigFigs
mL
mL
21.3 mL 3 SigFigs
mL
3.21 mL 3 SigFigs
kPa
50.9 mL 3 SigFigs
mL
18.50 mL 4 SigFigs
mL 74.5 mL 3 SigFigs psi
38.0 C 3 SigFigs
24.0 C 3 SigFigs
-26.0 C 3 SigFigs
70.9 kPa 3 SigFigs
mm
mm
2.0 kPa 2 SigFigs
87.40 mm 4 SigFigs
47.00 mm 4 SigFigs
102.98 g 5 SigFigs
K
K
C
215.49 g 5 SigFigs
349.16 g 5 SigFigs
mL mL
19.58 mL 4 SigFigs
18.17 mL 4 SigFigs
mL
177.7 mL 4 SigFigs
mL 26.7 mL 3 SigFigs
mL
5.70 mL 3 SigFigs
mL
15.21 mL 4 SigFigs
52.0 K 3 SigFigs
96.0 K 3 SigFigs
2.0 K 2 SigFigs
mL
210.9 mL 4 SigFigs
torr
15.0 torr 3 SigFigs
mL
20.9 mL
cm
3 SigFigs
kPa
78.8 kPa 3 SigFigs
cm
33.00 cm 4 SigFigs
93.00 cm 4 SigFigs
mL
2.89 mL 3 SigFigs
546.23 g 5 SigFigs
mm
6.91 mm 3 SigFigs
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