1. 25: Density

2. Presentation Cues
No one wants to listen to the teacher the whole time;)
Volunteer/Class Discussion – quick answer from raised hand (remember/understand)
Pair/share – quick chat with neighbor and volunteer or teacher pick share (remember/understand/apply)
Group task – longer time for pair or group to apply, analyze, evaluate or create
Individual write – personal reflection on topic
Rotations – solve the station with group and write answer on paper, rotate with timer and stay with your group
5?Quiz – quick check for understanding about topic

3. Today we will learn to calculate density by..
NEED TODAY
SCIENCE
Day 1
Challenge Explanation
Millsium Notes
WB Practice
Gizmo Laboratory

4. Unit Challenge: Construct Vessel to keep all ponies afloat for 30s

5. MILLSIUM NOTES: CALCULATING DENSITY
v=- 7iYWyadIfs&list=PLfwolDvYxglipQ7 gc2ciIBViFM_QTzEXp&index=2&t= 92s
Stop at 4:50

6. What is MASS? What is VOLUME? What is DENSITY?
SAME
SAME
SAME DENSITY

7. What is MASS? What is VOLUME? What is DENSITY?
DIFFERENT
SAME
MORE DENSE

8. What is MASS? What is VOLUME? What is DENSITY?
SAME
DIFFERENT
MORE DENSE

9. What is MASS? What is VOLUME? What is DENSITY?
DIFFERENT
SAME
MORE DENSE

10. What is MASS? What is VOLUME? What is DENSITY?
DIFFERENT
DIFFERENT
SAME DENSITY

11. What is MASS? What is VOLUME? What is DENSITY?
DIFFERENT
DIFFERENT
MORE DENSE

12. What is MASS? What is VOLUME? What is DENSITY?
DIFFERENT
DIFFERENT
SAME DENSITY

13. WB Practice
SHOW WORK
BOX ANSWER

14. D= = = 1. Calculate the density 100g mass 2g/mL volume 50mL
An object has the measurements of 100g and 50mL. What is it’s density? D=
100g
mass = =
2g/mL
volume
50mL

15. 2. Calculate the Density
D=m/v
= 3.5g/1cm3
= 3.5g/cm3

16. D= = = 3. Calculate the density 128g mass .64g/mL volume 200mL
An object has the measurements of 128g and 200mL. What is it’s density? D=
128g
mass = =
.64g/mL
volume
200mL

17. 4. Calculate the Density
D=m/v
= 7.8g/1cm3
= 7.8g/cm3

18. 5. What is the density of this substance?
mass
volume
18g D=
3cm3 D=
6g/cm3
Pick any point!
-hint, pick a point that has actual numbers on the axis so you don’t have to guess!

19. 6. Which 2 objects have the same density? What is it?
Table below shows mass and volume for 3 objects (A, B & C) A B C
Mass = 4g
Mass = 6g
Mass = 8g
Volume = 2cm3
Volume = 6cm3
Volume = 4cm3
Formula for calculating density is D=m/v
D=m/v
=4g/2cm3
= 2g/cm3
D=m/v
=8g/4cm3
= 2g/cm3

20. 7. What is the density of this substance?
mass
volume
100g D=
20cm3 D=
5g/cm3
Pick any point!
-hint, pick a point that has actual numbers on the axis so you don’t have to guess!

21. 8. Calculate the density of the object.
Mass = 16g Volume = 2cm*2cm*2cm = 8cm3 D = 16g/8cm3 = 2g/cm3 1g
2cm
2cm

22. GIZMO Login to www.explorelearning.com Go to DENSITY LABORATORY
Find MASS of each object by placing on scale.
Find VOLUME of each object by placing in graduated cylinder
Calculate DENSITY with equation D=m/v
Drop object in water (Density = 1g/mL) and record
If you get stuck ask for help!!!!

23. Today we will describe why things float and sink based on density…
NEED TODAY
Yesterday’s handout
SCIENCE
Day 2
Millsium Notes
Gizmo Analysis
Density Boxes
Float/Sink Game
Gizmo: Density via Comparison

24. MILLSIUM NOTES: Floating and Sinking
/watch?v=NNTErpSyb- c&t=348s&index=1&list=PL fwolDvYxglipQ7gc2ciIBViF M_QTzEXp
Stop at 4:50

25. Gizmo Analysis What do all FLOATING OBJECTS have in common?
DENSITY LESS THAN 1g/mL
What do all SINKING OBJECTS have in common?
DENSITY MORE THAN 1g/mL

26. What happens if I INCREASE THE DENSITY of the liquid?
Gizmo Analysis
What happens if I INCREASE THE DENSITY of the liquid?
More objects float

27. What happens if I DECREASE THE DENSITY of the liquid?
Gizmo Analysis
What happens if I DECREASE THE DENSITY of the liquid?
More objects sink

28. Number off at tables as shown
GROUP GAME
Number off at tables as shown
Everyone writes answer on board
Mills rolls dice, number called must hold up correct answer for table to get points
Team with most points gets to visit snack drawer! 5 1 2 3 4

29. 1. Which of the following will FLOAT in WATER?
Apple
Gelatin
Marble
Wood - Pine
.64 g/mL
1.27 g/mL
2.7 g/mL
.65 g/mL
1.0 g/mL

30. 2. What will IRON do when placed in MERCURY?
Iron (7.6g/cm3) floats in Mercury (13.55g/cm3) .

31. 3. Which of the following will SINK in GASOLINE?
Butter
Cork
Styrofoam
Wood - Bamboo
.87 g/mL
.24 g/mL
.20 g/mL
.35 g/mL
.72 g/mL

32. 4. What would you expect to SINK in Dish Soap but FLOAT in Honey?
Dish soap (1.06g/mL)
Nylon (1.11g/cm3)
Gelatin (1.27 g/mL)
Maple Syrup (1.37g/mL)
Honey (1.42 g/mL)

33. 5. Which of the objects listed on the chart is the most dense?
Platinum (21.3 g/cm3)

34. 6. Why do Helium balloons float?
Helium is about 10 times less dense than Air
Helium ( g/mL)
Air
( g/mL)

35. 7. Which natural material would make the best raft?
Butter
Bone
Rubber
Wood - Bamboo
.87 g/mL
1.8 g/mL
1.52 g/mL
.35 g/mL

36. 8. Which of the following materials would you suggest the little pigs build their houses out of in a hurricane zone?
Brick
Cardboard
Concrete
Iron
Wood
1.92 g/mL
.68 g/mL
2.4 g/mL
7.6 g/mL
g/mL

37. 9. Which sample will settle between Oil and Water?

38. CER: Will a 14lb bowling ball float in the dead sea?

39. What information from today might help you construct your vessel?

40. GIZMO Login to www.explorelearning.com Go to DENSITY VIA Comparison
Record whether each Object floats or sinks as you drop in each container.
Estimate the density based on the way it behaves.
If you get stuck ask for help!!!!

41. Today we will explore Archimedes principles and the constant nature of density
NEED TODAY
handout
SCIENCE
Day 3
Lab Analysis
Chemical Spill
Archimedes Millsium
Gizmo Crowns
Constant Density
Slice and Dice Lab

42. Think back to simulations…
How does the speed of sinking related to the density of an object?
Greater density = faster sink
How can we get something to hover anywhere in a substance?
Same density as the substance it is in

43. Chemical Spill
Calculate Densities
Color layers
How to separate red?

44. MILLSIUM NOTES: Archimedes Bath
v=vyJqbDMCTO8&t=1s

45. 2. What is the difference between DENSITY and DISPLACEMENT
Density: how many atoms are in a space (mass in a volume)
-must be calculated
Displacement: method of MEASURING volume of solid by seeing how much water it moves

46. GIZMO Login to www.explorelearning.com Go to DENSITY LABORATORY
Find out Which Crown is Actually Made of Gold!

47. Density is a Constant
Density is the same for any chunk of a substance!
Every cm3 of glass has a mass of 2.5g!
Every mL of vegetable oil has a mass of .91g!
Every cm3 of Hydrogen has a mass of g!
Mass
Volume
Density
3.3g
1cm3
3.3g/cm3
6.6g
2cm3
9.9g
3cm3
13.2g
4cm3
Mass goes up by the same proportion that volume does!
Ratio of Mass to Volume stays the same!

48. GIZMO Login to www.explorelearning.com Go to DENSITY Slice & Dice
Complete chart

49. Gizmo Tasks to complete today!
Density Laboratory
Part 2: Find Density of first 12 Objects
Part 7: Find Density of Crowns
COMPLETE QUIZ
Density via Comparison
Part 4: Estimate Density of Spheres based on behavior in liquids
Density Slice & Dice
Part 9: Find how density affected by size of material

50. Today we will determine the nature of the Mystery Blocks using our science skills!
NEED TODAY
handout
SCIENCE
Day 3
Videos
How do ships float?
Mystery Blocks

51. Uber cool density column!

52. What are ships made of? Iron (7.6g/mL) How do they float?
v=pnIlE1xD-yM
Why did Titanic Sink
v=vjKGYJac0GU

53. Made of Iron, Full of Air!

54. What information from today might help you construct your vessel?

55. Vessel considerations…
What is your overall density goal?
<1g/cm3
Mass should be less than volume
What material should you attempt to incorporate into your design to help it float?
Air!
How do you want your vessel to look?
Wide not deep

56. Shiny or no? Test w/ light Measure Calculate You’re welcome!
Best observation
Shiny or no?
Test w/ light
Measure
You’re welcome!
Calculate
Use chart to match characteristics
List of Block #’s based on density

57. Videos Study Jams Millsium
of-matter.htm
Millsium