WorksheetsAccuracy/Precision, % Error, Sig Figs
Total questions: 45
Worksheet time: 23mins
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
16%
18.75%
2.25%
18%
A set of data are all close to each other, but they are not close to the actual value. This set of data can be described as having...
good accuracy
good precision
both good precision and accuracy
neither good precision nor good accuracy
What is the length of the blue line?
.3 cm
.33 cm
.03 cm
3.219 cm
Students worked in teams to measure the length of an object. The actual length of the object was 7.0 cm.
Select the best choice that represents their data in terms of accuracy and precision
GROUP RESULTS
5.00 cm
5.01 cm
5.02cm
4.99 cm
5.00 cm
4.99 cm
both accurate and precise
only accurate
only precise
not accurate and not precise
How many significant figures should your answer have for the following multiplication problem 19.10 X 18.0 X 22
2
4
3
none
Comparing the two numbers written in scientific notation, which number is larger 6.0 X 10 -3 or 6.0 X 10 -2
6.0 X 10 -3
6.0 X 10 -2
both have the same value
Finish the statement. When it comes to doing problem and using significant figure rules, the answer to the problem__
cannot be anymore precise than the least precise number in the problem, for addition it is the least numbers to the right of the decimal, and for multiplying it is the least number of significant figures
should be that all numbers are significant that appear in a calculator
should never be rounded
should never have any zeros
How many significant figures in 20.3400
4
6
5
2
Accuracy is
Measurements that are close together
Measurements that are close to the true value
How close measurements are to the true value
How close together measurements are to each other
Record the following in cm
1.0
1.2
1.25
1.250
1.30
How many significant figures are in this number: 0.005
1
2
3
4
How many significant figures are in this number: 5.00
1
2
3
4
Convert this number to scientific notation (rounding to hundredths place): 6,032
6.032 x 103
6 x 103
6.03 x 10-3
6.03 x 103
Convert this number to scientific notation (rounding to hundredths place): 45,670
4.57 x 104
4.56 x 104
4.57 x 10-4
4.56 x 10-4
Convert this number to scientific notation (rounding to hundredths place): 60,050,120
6.01 x 107
6.01 x 10-7
6.00 x 107
6.00 x 10-7
How many significant figures are in this number: 0.00045
1
2
3
4
How many significant figures are in this number: 7.000
1
2
3
4
How many significant figures in this value: 752,000
1
7
6
3
How many significant figures in this value: 45,000,075
4
5
8
2
Convert this number to scientific notation (rounding to hundredths place): 0.006032
6.032 x 103
6 x 103
6.03 x 10-3
6.03 x 103
Convert this number to scientific notation (rounding to hundredths place): 0.0004571
4.57 x 104
4.56 x 104
4.57 x 10-4
4.56 x 10-4
Convert this number to scientific notation (rounding to hundredths place): 0.00000060057
6.01 x 107
6.01 x 10-7
6.00 x 107
6.00 x 10-7
TRUE or FALSE: Our answers in the lab are limited to the LEAST number of significant figures
True
False
TRUE or FALSE: The more significant figures our instrument can read to, the more accurate our data
True
False
1.65x104 ______ 1.65x106
Greater than >
Less than <
Equal to =
1.65x10-4 ______ 1.65x10-6
Greater than >
Less than <
Equal to =
1.96x10-14 ______ 1.25x10-16
Greater than >
Less than <
Equal to =
Which is the more precise measurement?
4 mL
4.3 mL
4.30 mL
4.300 mL
Add and give the correct number of sig figs: 5.67 + 4.2 + 7.331
17.201
17.20
17.2
17
Multiply and give the correct number of sig figs: 5.20 x 6.03 x 12.879
404
403.8
408.83
403.834
Which of the following is expressed in 3 sig figs?
100
1.002
1.0
1.02
A student measures 28mL but the correct volume is 25mL. What is their percent error?
12%
-12%
3%
-3%
What is the main advantage of the metric system?
has more units
comes from nature
it is scientific
Multiples of 10
Which Student is the most Precise?
Student A
Student B
Student C
Which student had the more accurate results?
Student A
Student B
Student C
Cannot be determined
Mark all that apply.
In the following data, which digits are certain (known)?
7.38 g/mL
7
3
8
all the decimal places to the right of the 8
g/mL
