Name:_____________________________________________________________
Period:____________
Date:________________
Homework
Graphing and % Error
1. A student determines the density of a mineral to be 1.5 grams per cubic centimeter. If
the accepted value is 2.0 grams per cubic centimeter,what is the student's percent
deviation (percent error)? Show your work.
2. A student determined the porosity of a sample of soil to be 37.6%. The actual porosity
is 42.3%. What is the student's percent deviation from the accepted value
(percentage of error) ? Show your work and round to the nearest tenth.
3. A student collected and recorded measurements of the amount of carbon monoxide in
the air at the same location each day for one week. The data are shown below.
The student concluded that the amount of carbon monoxide in the air increased and
then decreased during the week. A source of error in the student's investigation is
that the student failed to
1)
2)
3)
4)
identify the days of the week
identify the month
collect data at the same time each day
state the method of measurement
4. During a laboratory activity, four students each determined the density of the same
piece of granite. The results are shown in the table below.
The accepted value for the density of granite is 2.70 grams per cubic centimeter.
Therefore, the results of this activity indicate that
1)
2)
3)
4)
the accepted density of granite is incorrect
the balance used by student 3 was broken
each student determined the exact accepted value for the density of granite
the density determined by each student contains a small error
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5. A student determines the density of a mineral to be 3.5 grams per cubic centimeter. If
the accepted value is 4.8 grams per cubic centimeter, what is the student's
approximate percent error?
1) 13%
2) 27%
3) 37%
4) 73%
6. The data table below shows the mass and volume of three samples of the same
mineral. Calculate the density for each sample, then answer the question.
Which graph best represents the relationship between the density and the volume of
these mineral samples?
1)
2)
3)
4)
7. A student calculates the densities of five different pieces of aluminum, each having a
different volume. Which graph best represents this relationship?
1)
2)
3)
4)
8. Which graph best represents the relationship between mass and volume of a material
that has a density of 5 grams per cubic centimeter?
1)
2)
3)
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4)