3. Let’s debrief your volume work from Activity 8 last class.
get out WS 8.1b/c
we need to all be “on the same page” now or all future work will be “off”

4. When an object has measurable sides
Measuring
When an object has measurable sides

5. ruler ruler ruler ruler ruler ruler 7.2 cm3 7.2 cm3 V =𝜋𝑟2ℎ 5.7 cm3
L=1.2 cm W=1.2 cm H=5 cm
L x W x H
1.2 x 1.2 x 5
7.2 cm3
L x W x H
1.2 x 1.2 x 5
ruler
L=1.2 cm W=1.2 cm H=5 cm
7.2 cm3
L=2.5 cm W=2.5 cm H=2.5 cm
ruler
L x W x H
2.5 x 2.5 x 2.5
15.6 cm3
L=2.5 cm W=2.5 cm H=2.5 cm
L x W x H
2.5 x 2.5 x 2.5
ruler
15.6 cm3
V =𝜋𝑟2ℎ
ruler
5.7 cm3
D= 1.2cm H=5 cm
3.14 x .62 x 5
V =𝜋𝑟2ℎ
ruler
D= 1.2 cm H=5 cm
5.7 cm3
3.14 x .62 x 5

6. When an object does not have measurable sides
Displacement
When an object does not have measurable sides

7. N/A N/A 8 mL 8 mL 6 mL 6 mL Vf-Vi 38 – 30 Vf-Vi 38 – 30 Vf-Vi 36 – 30
Vi=30 mL Vf=38mL
8 mL
displacement
Vf-Vi
38 – 30
Vi=30mL Vf=38mL
8 mL
displacement
N/A
N/A
Vf-Vi
36 – 30
6 mL
displacement
Vi=30 mL Vf=36mL
Vf-Vi
36 – 30
Vi=30 mL Vf= 36mL
displacement
6 mL

8. If you use a tool capable of more accuracy (on target) and precision (repeated accuracy), you will get better measurements/results.
best tool:
digital calipers

9. digital calipers
If you use a tool capable of more accuracy (on target) and precision (repeated accuracy), you will get better measurements/results.

10. L=1.27 cm
W=1.27 cm
H=5 cm
L x W x H
1.27 x 1.27 x 5
digital
calipers
8 cm3
L=1.27 cm
W=1.27 cm
H=5 cm
L x W x H
1.27 x 1.27 x 5
digital
calipers
8 cm3
L=2.54 cm W=2.54 cm H=2.54 cm
L x W x H
2.54 x 2.54 x 2.54
digital
calipers
16.4 cm3
L=2.54 cm W=2.54 cm H=2.54 cm
L x W x H
2.54 x 2.54 x 2.54
digital
calipers
16.4 cm3
V = 𝜋𝑟2ℎ
3.14 x .642 x 5
digital
calipers
D= 1.27 cm
H=5 cm
6.1 cm3
V = 𝜋𝑟2ℎ
3.14 x .642 x 5
digital
calipers
D= 1.27 cm
H=5 cm
6.1 cm3

11. Sept 26 / 27 Act A9 Measuring Mass, Calculating Density
LEARNING TARGET: I can mathematically determine an objects’ density by using its mass and volume.
CH Q
How can you use the mass and volume of an object to calculate its density?
VOCAB:
Density; mass; qualitative; quantitative; volume; weight

12. VOCAB:
Density
Mass
Qualitative
Quantitative
Volume
weight
= mass / volume
"stuff"
Describe with words
Describe with numbers
"space"
changes due to gravity

13. What is the formula for density??
DISCUSSION
What is the difference between mass and volume?
Compare the densities of gray materials?
What is the formula for density??

14. PROCEDURE: Read on pg. A-37-39 and summarize
PROCEDURE AND DATA
MATERIALS:
PROCEDURE: Read on pg. A and summarize
DATA: WS Mass, Volume and Density of Six Objects
WS Identifying Objects’ Material Using Density

15. Does the density change if the size changes?
POST DISCUSSION
Does the density change if the size changes?
What do you think will happen to the density of the clay if it is cut in half?
if Volume changes, then mass will change proportionately (the same “amount”)

16. If a piece of clay has a mass of 10g and a volume of 5cm3 (density 2g/cm3) is cut in half, what will be the density of the two new pieces of clay? Explain your reasoning.
The density will stay at 2g/cm3,
if Volume changes, then mass will change proportionately
(the same “amount”)

17. ANALYSIS
Discuss and answer Q 2 on pg. A-40
Density of Water = 1g/cm3

18. Unit A Quiz ( Oct 01 / 02) ANS CH Q
How can you use the mass and volume of an object to calculate its density? A:
HOMEWORK
Analysis Question 3 a-e on pg A-40
HINT : Write Formulas and SHOW all work
HINT : 3e needs two diagrams (before and after) along with labels, computation and explanation.
(Take a photo OR use SEPUP website to find questions if needed)
Unit A Quiz ( Oct 01 / 02)

19. Review Day
Prepare a review sheet (Study Guide) for each activity we have completed.
You may use the front and back of one piece of paper to write all of the important aspects learned in this unit
At least 2 take-aways from each lesson.

20. There is a study guide on website!!! 
Review all Documents on website as part of your review.
Good Night’s Sleep and Eat Good Breakfast
Due On Quiz day
Vocab Packet
All WS handed out through unit (9)