1. Unit 3 INTRO Calculating Density

2. “Salt Water Rainbow Straw”
“Floating Bowling Balls”
“Sink of Float: Soda Pop”

3. What makes it happen?
Beginning course details and/or books/materials needed for a class/project.

4. Archimedes discovered the secret…
“Blonde guy telling Archimedes story”

5. (

6. Density! In liquids… Things that are more dense sink to the bottom
Things that are less dense rise to the top
A schedule design for optional periods of time/objectives.

7. Which is more dense?
Inference:
Evidence:

8. Which is least dense?
Evidence:
Inference

9. Which LIQUID is more dense?
Evidence
Inference

10. What the heck is density?
Density is the amount of matter packed into a certain space.
Less dense
Introductory notes.
More dense

11. What the heck is density?
Density is the mass of a substance divided by the volume of the substance.
Density = mass/volume
A list of procedures and steps, or a lecture slide with media.

12. I LOVE DENSITY!

13. Need to make two measurements
Mass
The amount of matter in a substance
Kinda like how much it weighs
Volume
The amount of space a substance takes up
Kinda like how big it is

14. Need to make two measurements
Mass
Measure with a triple beam balance
Volume
Measure with a centimeter ruler

15. But How… Mass Start with sleds at 0 100 grams? 10 grams? 1 gram?
Volume
Little lines are 0.1 cm
Measure length
Measure width
Measure height
Volume = l x w x h

16. Practice Reading

18. Density units Mass Measure in grams Volume
Measure in centimeters 3 times
cm3

19. Another way to measure volume
If you’ve got stuff that is not a cube…
Put some water in a graduated cylinder
Make note of the amount of water
Drop in “the thing”
Note the new water level
Subtract

21. Metrics is so cool!
cm3 = mL

22. How to calculate Density

23. One of your Homework Options
Remember to calculate the volume and mass BEFORE you pour things together.