This document outlines notes from a science lesson on relative error. It includes instructions for students to complete homework problems and an experiment to measure density. The document provides examples to calculate relative error and asks students to consider how this concept could be applied to other labs.

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Do Now
Module 4 Lesson 13:
Relative Error
Volume Handout
Homework:
1.)Page 55 1-3
2.) Exam 2/1/17

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Find the volume of the following
rectangular prisms.
1.)
4 cm
2 cm
3 cm
2.)
3.6 cm
1.1 cm
0.7 cm

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Answer the following questions.
1.) What is density?
2.) How do you find density?
Anticipatory Set 53

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Record your data below:
1.) Mass of the object:
2.) Length:
3.) Width:
3.) Height:
4.) Volume:
5.) Density:
Finding Density Experiment 53

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1.) How do you know if your experiment was successful?
Anticipatory Set 2 53

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Use the formula below to find the relative
error of your experiment.
Relative Error =
measured - actual
actual
100
The actual density of aluminum is 2.7 g/cm3 54

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1.) How successful was your experiment? Justify your
answer.
2.) What do you think caused any error that you had?
Follow Up Questions
54

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1.) The density of iron is 7.9 g/cm3
. In an experiment I
found the mass of my sample to be 118 grams and the
volume to be 14 cm3
. What the density based on my
experiment and what is the relative error of my answer?
2.) The density of is 8.9g/cm3
. In an experiment I found the
mass of my sample to be 850 grams and the volume to be
100 cm3
. What the density based on my experiment and
what is the relative error of my answer?
Extra Examples 54

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Closing Activity:
Can you think of a lab that you did in science
this year or last that you could have used
relative error to determine your accuracy?

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