Cl-Ev-R – Density Lab
Name ____________________________________
Period
1
2
3
4
January 24, 2014
Claim:
If the mass is ____________________ than the volume, then the density will be ___________________ than 1 (one). If
the mass is _________________ than the volume, then the density will be __________________ than 1 (one).
Raw Data from the Experiment
Evidence
Reason
1. How were each of the 3 balls
different from each other?
a. Golf Ball ______________
1. Explain the differences
between the 3 types of balls
based on their densities.
Using the principle of density,
explain why the densities are
different for each type of
substance.
_______________________
_______________________
b. Tennis Ball ____________
_______________________
_______________________
c. Foam Ball ____________
_______________________
_______________________
2. Compare the painted blocks
versus the plain blocks (use 2 of
the same size). Is there a
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
2. Explain the differences
between the 2 types of blocks
based on their densities.
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
difference in the mass or
_____________________________
_____________________________
volume? ______ If yes, what is
_____________________________
_____________________________
that difference?___________
_____________________________
___________________________
_____________________________
___________________________
_____________________________
3. Look at 2 blocks that are the
_____________________________
Using the principle of density,
explain why the density does not
change when the shape or size of
a substance is changed.
same (painted or plain) but of
_____________________________
_____________________________
different sizes.
_____________________________
_____________________________
a. How is their appearance
the same? ____________
_______________________
b. How is their appearance
different? _____________
_______________________
c. How do their densities
compare to each other?
_______________________
_______________________
3. Explain the differences
between the 2 sizes of blocks
based on their densities.
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
Grading Rubric
1. The Claim – Only the Claim Section
Name ____________________________________
Period
1
2
3
4
January 24, 2014
Possible
Grade
Criteria
The claim responds to the hypothesis
5
The claim is complete
5
The claim stands alone (without asking questions about it)
5
The claim is written in a complete sentence
5
Total
Grade
Earned
20
2. The Evidence – The Raw Data from the Experiment & the Evidence Sections
Possible
Grade
Criteria
The evidence is appropriate for the claim
6
The evidence is clear
6
There is enough evidence to support the claim
6
The evidence is written in scientific terms
6
The evidence is describe using complete sentences
6
Total
Grade
Earned
30
3. The Reasoning – Only the Reason Section
Possible
Grade
Criteria
The reasoning provides a rule or reason that links the evidence to the claim
without just repeating the claim and evidence.
10
The reasoning explains how or why the evidence supports the claim.
10
The reasoning is clearly stated without needing to infer meaning.
10
The reasoning includes a scientific concept or principle that links the claim and
evidence.
10
The reasoning is written in complete sentences.
10
Total
Experiment Total
50
100
Grade
Earned
Cl-Ev-R – Density Lab
Name Answer Key
Period
1
2
3
4
September 9, 2013
Claim:
If the mass is bigger
than the volume, then the density will be greater
than the volume, then the density will be less
than 1 (one). If the mass is
smaller
than 1 (one).
Raw Data from the Experiment
Evidence
Reason
1.
1. Explain the differences
between the 3 types of balls
based on their densities.
Using the principle of density,
explain why the densities are
different for each type of
substance.
How were each of the 3 balls
different from each other?
d. Golf Ball the mass is high, the
volume is low, the density
highest
e. Tennis Ball the mass is lower,
the volume is greater, the
density is smaller
f.
Foam Ball the mass is the
lowest, the volume is the
smallest, the density is the
lowest
2.
Compare the painted blocks
versus the plain blocks (use 2 of
the same size). Is there a
difference in the mass or
volume? No If yes, what is that
difference?___________
___________________________
___________________________
3.
Look at 2 blocks that are the
same (painted or plain) but of
different sizes.
d. How is their appearance the
same? They have the same
surface, same materials
e. How is their appearance
different? The sizes & shapes
are different
f.
How do their densities
compare to each other? The
densities are the same
(density doesn’t change with
shape or size)
The golf ball has the greatest
density, followed by the tennis
ball, and then the foam ball.
2. Explain the differences
between the 2 types of blocks
based on their densities.
The amount of paint on the
painted block is insignificant
and does not change the
density.
3. Explain the differences
between the 2 sizes of blocks
based on their densities.
The density did not change the
when the size of the block
changed.
The balls were made out of
different materials. Each type of
material will have a different and
unique density.
Using the principle of density,
explain why the density does not
change when the shape or size of
a substance is changed.
The density does not depend on
the size or shape of an object. It is
determined by the type of material
used.