1. FOSS Diversity of Life
Ms. Longo 6th Grade Earth Science

2. Expectations Be prepared for class when bell rings
Listen and follow directions
Open notebooks and begin Do Now as soon as you enter the room
Raise your hand to speak
Be respectful of all life
SHARE OUR GOALS AND EXPECTATIONS!!! Find out their goals and questions using sticky notes

3. FOSS Weather and Water

4. Inv 4: Convection
Convection develops the concept of density on their way to understanding convection as a process of mass movement of fluids and a mechanism for energy transfer.

5. 11/2 Agenda
Liquid Layers Lab
NB sheet 8

6. Announcements Tuesday is a minimum (early dismissal) day
Saturday School this Saturday 11/7
Bring colored pencils to class tomorrow
Student of the Month awards
Tutoring/Makeups on Thursday after school

7. Do Now What standards are we working on?
Try to find them on your standards page
Attach this page into your NB 2 pages before the index
Staple or tape so that you can see both sides of the paper
Attach your Syllabus to the page before the Index

8. NGSS: MS-ESS2-5
Collect data to provide evidence for how the motions and complex interactions of air masses result in changes in weather conditions.

9. CCSS: RST.6-8.3
Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.

10. Depth of Knowledge (DOK)
Level 1 Recall and Reproduction
Level 3 Strategic Thinking

11. Inv 4.1: Density of Fluids
We have learned that air flow is what causes wind.
What are other things that flow, besides air?
Inv 4.1, Step 1

12. Inv 4.1: Density of Fluids Fluids are substance that are free to flow.
Gases, like air, and liquids, like water are fluids.
In order to understand more about wind, we need to study more about the properties of fluids.
We are going to spend more time looking at liquids as a model of these fluid properties, because it is easier to see liquids than gases.
Inv 4.1, Step 1

13. Density Bottles
What is happening? Can you explain why the liquids behave the way they do?
How could the colorless liquid be on top in one place and on bottom in the other?
Inv 4.1, Steps 2

14. Density Bottles
We will revisit these after we investigate the behaviors of liquids when they are put together.
Inv 4.1, Steps 2

15. Groups Students will work in groups of 4
Each group has 2 pairs of students working together

16. Layer Challenge-30 minutes
I have four liquids for you to investigate. Your challenge is to layer all four liquids in a section of straw. Each of the liquids is made of water, salt, and food coloring.
Inv 4.1, Step 3

17. Demonstration
Push a straw over the ball in the center of the holder with the angle-cut end on the bottom. When the straw is pushed down firmly, the straw will be on a slight angle.
Use the pipettes to gently squeeze a few drops of liquid down the inside of the straw. Always return the pipette to the vial of liquid from which it came.

18. Demonstration
To empty straws, lift the straw from the bulb base. The bottom of the base serves as a reservoir to catch the discarded liquids. After several trials, empty the reservoir into a plastic cup and dry it with a paper towel.
Try testing two liquids at a time, instead of all four. Record results & make predictions about how the four liquids will layer all together before trying it.

19. Notebook Sheet 8 -Liquid Layers Liquid Layers
Use colored pencils to record the results of your trials in the rectangles on the sheet in part 1.
Use this information to help you figure out how to sequence the liquids in your next attempt
When you have successfully layered all four solutions, answer the question in part 2.

20. Layer Challenge Materials
Container with solutions, pipettes, and straws
Straw holders
Colored pencils
Safety goggles
Inv 4.1, Step 6

21. Clean up Clean straw holder with the paper towel Clean up spills
Empty used water into the jar
Return materials neatly to the materials station

22. Discuss Results Be prepared to answer the questions
What do you think caused the salt solutions to layer in this way?
All of the solutions are made with the same materials, water and salt. How it it that some salt solution can be heavy and some light if they are made of the same materials?
Inv 4.1, Step 10

23. Discuss Results Look at the Saltwater Solution Recipes
Answer part 2 on NB sheet 8 if you have not already
Inv 4.1, Step 10

24. Liquid Informatio
Inv 4.1, Step 8

25. 11/3 Agenda Predict the density of salt solutions NB sheet 9
Density Challenge

26. Announcements Today is a minimum (early dismissal) day
Saturday School this Saturday 11/7
Tutoring/Makeups on Thursday after school

27. Do Now NB Maintenance Color drawings
Finish/update answers to questions
Attach Standards page into your NB 2 pages before the index
Staple or tape so that you can see both sides of the paper
Attach your Syllabus to the page before the Index

28. NGSS: MS-ESS2-5
Collect data to provide evidence for how the motions and complex interactions of air masses result in changes in weather conditions.

29. CCSS:
RST Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. MP.2 6.NS.C.5 Reason abstractly and quantitatively.

30. Depth of Knowledge (DOK)
Level 1 Recall and Reproduction
Level 3 Strategic Thinking

31. Develop Particle Model
Inv 4.1, Step 11

32. Particles in a syringe
Inv 3.1, Step 1

33. Describe how the particles in the syringe changed when the air was:
Particles in a syringe
Describe how the particles in the syringe changed when the air was:
more dense
Less dense
Inv 3.1, Step 1

34. NB Sheet 9- Straw Column- 9 minutes
Lightly shade in the column with the four colors from the activity
Label the layers with the amount of salt (or no salt) by drawing dots in the column to create a model that represents the density of the particles of salt in the straw.
The amount of water was the same, so do not draw water particles, only salt.

35. Density Bottles
How are these two bottles like the investigation you did yesterday?
How are they different?
What causes liquids to form layers like this?
Inv 4.1, Steps 2

36. Weight Discussion
Which is heavier, gold or feathers?

37. Weight Demonstration
Which do you think is heavier, the cup of foam or the cup of beans?
The cups are the same size and they are both full. How can one be heavier than the other?

38. Density
When you have equal volumes of material, and one is heavier than the other, the heavier material is more dense.
Density = number of particles in a space (the amount of matter in a volume of material).
There is a lot of matter in a volume of rock, steel, or gold. There is less matter in an equal volume of cotton, cork, or air.

39. Density
Density is a property of matter. All matter has density, including all solids, liquids, and gases. If you compare equal volumes of matter, and one is heavier (has more mass), the heavier volume is more dense.

40. What is the relationship between layering of fluids and density?
Focus Question 4.1:
What is the relationship between layering of fluids and density?
Answer now
Add to Table of Contents when done
Inv 4.1, Step 16

41. 11/4 Agenda Calculating Density of Layers NB sheet 10 Practice

42. Announcements Exploring Your Universe science festival
at UCLA Nov.8 Sunday, free event
Saturday School this Saturday 11/7
Tutoring/Makeups on Thursday after school

43. Do Now
NB Maintenance
FQ 4.1

44. NGSS: MS-ESS2-5
Collect data to provide evidence for how the motions and complex interactions of air masses result in changes in weather conditions.

45. CCSS:
RST Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. MP.2 6.NS.C.5 Reason abstractly and quantitatively.

46. Depth of Knowledge (DOK)
Level 1 Recall and Reproduction
Level 3 Strategic Thinking

47. Do you think density played a role in the layering phenomenon?
In the Liquid Layers Lab, you discovered how to layer all four solutions.
Do you think density played a role in the layering phenomenon?
Look back at your drawings on NB sheet 9
Inv 4.1, Step 16

48. Investigate Salt Solutions
Materials: 4 containers of salt solution
Measure 25 ml of the red solution and 25 ml of yellow solution into separate cups
Inv 4.1, Step 18

49. Investigate Salt Solutions
Will these two identical volumes of salt solution have the same mass?
If not, which one will have the greater mass?
Red = ___ g/25 ml
Yellow =___ g/25 ml
Inv 4.1, Step 18

50. Relative Densities Which solution is more dense? How do you know?
Which solution layered on top of the other?
What does this tell you about how liquid of different densities interact?
What would happen if you tried to layer the yellow on top of the red?
Inv 4.1, Step 19

51. Investigate Salt Solutions
Repeat with green and blue solutions
Green = ___ g/25 ml
Blue =___ g/25 ml
Inv 4.1, Step 18

52. Investigate Salt Solutions
Repeat with green and blue solutions
Red =___ g/25 ml
Yellow =___ g/25 ml
Green =___ g/25 ml
Blue =___ g/25 ml
Copy this data to part 3 of the
Liquid Layers NB sheet 8
Inv 4.1, Step 18

53. Review NB sheet 9- Straw Column
Be prepared to answer:
Based on what you know about the mass of the solutions and amount of salt that was added, how would you describe the density of the liquids?
Update your diagram if you need to.
Inv 4.1, Step 20

54. Review NB sheet 9- Straw Column
In our fluid layers in the straw, the more dense liquids were on the bottom. The amount of water added to each solution was the same, so the difference in density is because of the salt we added. We can represent the density of salt particles in the liquids this way.
Inv 4.1, Step 20

55. I have two samples of salt water.
Density Challenge
I have two samples of salt water.
Sample 1 is 45 mL, and its mass is 54 g.
Sample 2 is 120 mL and its mass is 132 g.
Which sample is more dense?
Inv 4.1, Step 21

56. Density Challenge
Density is the ratio between the mass of a sample of matter and it’s volume.
The mass of a sample is the amount of stuff in it.
You find the mass of an object or sample of material by weighing it.
Mass is measured in grams.
Inv 4.1, Steps 21–23

57. Density Challenge
The volume is how much space a sample of matter occupies.
All matter has volume.
We measured the volume of liquids with a graduated cylinder.
Solids and gases are measured in cubic centimeters. Cubic centimeters and milliliters are the same
Inv 4.1, Steps 21–23

58. Density Challenge Mass _______ Volume Density =
Density is the amount of mass per cubic centimeter, or mass per milliliter. Density is a ratio, and it can be expressed as an equation. We can use the equation to calculate the density of anything for which we know the mass and volume.
_______ Volume
Mass
Density =
Inv 4.1, Steps 21–23

60. 11/4 Agenda Calculating Density of Layers NB sheet 10 Practice

61. Announcements Saturday School this Saturday 11/7
Tutoring/Makeups on Thursday after school

62. Do Now NB Maintenance Color drawings
Finish/update answers to questions
Attach Standards page into your NB 2 pages before the index
Staple or tape so that you can see both sides of the paper
Attach your Syllabus to the page before the Index

63. NGSS: MS-ESS2-5
Collect data to provide evidence for how the motions and complex interactions of air masses result in changes in weather conditions.

64. CCSS:
RST Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. MP.2 6.NS.C.5 Reason abstractly and quantitatively.

65. Depth of Knowledge (DOK)
Level 1 Recall and Reproduction
Level 3 Strategic Thinking

66. Densities of Salt Solutions- 10 minutes
NB sheet 10- Calculating Density of Layers
Transfer the data from NB sheet 9- Liquid Layers, onto the table on NB sheet 10
Calculate the densities of the salt solutions.
Inv 4.1, Step 24

67. Densities of Salt Solutions- 10 minutes
What were the densities of the 4 salt solutions?
Red ≈ ____ g/mL
Green ≈ ____ g/mL
Yellow ≈ ____ g/mL
Blue ≈ ____ g/mL
Inv 4.1, Step 24

68. Discuss Density Use whiteboards to answer the following.
The red solution was pure water with red coloring. What is the density of water?
Which solution was most dense?
How do you know?
What is the relationship between layering and density?
What happens when you try to layer a more-dense solution on top of a less-dense solution?
Inv 4.1, Step 25

69. Discuss Density
Pine wood has a density of 0.60 g/mL. Will it float or sink in water?
Styrene plastic has a density of 1.7 g/mL. Will it float or sink in water?
What general statement can you make about about floating and sinking in water?
Inv 4.1, Step 25

70. Review-Revisit Density Bottles
There is plain water and a less-dense liquid in both bottles
Explain what you observe in terms of density.
What is going on in each bottle?
Inv 4.1, Steps 2

71. Review Density
The density of an object can be calculated if you know its volume and its mass.
Volume can be measured in milliliters or cubic centimeters.
Mass can be determined by weighing.
Density is mass per unit volume.
Always include the units with your calculations and answers.
Inv 4.1, Step 25

72. Announcements Exploring Your Universe science festival
at UCLA Nov.8 Sunday, free event
Saturday School this Saturday 11/7
Tutoring/Makeups on Thursday after school

73. Revisit Focus Question:
Do Now FQ 4.1
Revisit Focus Question:
What is the relationship between layering of fluids and density?
Draw a line of learning under your first answer(s)
Add your new answer below the line
Inv 4.1, Step 28–31

74. 11/6 Agenda
FQ 4.2
Layering Hot and Cold Water lab
NB sheet 13

75. NGSS: MS-ESS2-5
Collect data to provide evidence for how the motions and complex interactions of air masses result in changes in weather conditions.

76. CCSS:
RST Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. MP.2 6.NS.C.5 Reason abstractly and quantitatively.

77. Depth of Knowledge (DOK)
Level 1 Recall and Reproduction
Level 3 Strategic Thinking

78. Revisit Focus Question:
Wrap-Up/Warm-Up
Revisit Focus Question:
What is the relationship between layering of fluids and density?
Inv 4.1, Step 28–31

79. Inv 4.2: Convection in Water
Focus Question:
How does heat affect density of fluids?
Add the FQ and date to a new page in your notebook
Do not answer now
Inv 4.2, Step 2

80. Layering Hot and Cold Water
Introduce the challenge
Materials
3 Vials with caps
2 Plastic-foam cups
2 Pipettes
1 Plastic cup
Inv 4.1, Steps 3–5

81. NB Sheet 13 Paste into your Notebook
Read the sheet and record your prediction

82. Layering Directions Fill a vial 2/3 full with room-temperature water.
Use the pipettes and colored water to create 3 layers (red, blue, and clear) in the vial.

83. Layering Directions
Go to water stations and get hot water (red) in one vial and cold water (blue) in a second vial.
Take only about half a vial of the hot and cold water.
Put each vial in its own plastic-foam cup to keep the hot water hot and cold water cold.

84. Layering Directions
Your third vial will be your experimental vial. Fill it about 2/3 full with room –temperature (RT) water.
Create your layers in the experimental vial.
Don’t jostle, move, bump, or touch the vial while the experiment is in progress

85. Layering Tips
The pipette can be carefully lowered through the RT water to put the red or blue water exactly where you want it.
Squeeze the pipette gently.
Do not let go of the bulb until pipette is removed from the RT water.
White paper behind the vial can help make it easier to see.
Inv 4.1, Step 6

86. Layering Tips
The clear plastic cup can be used to pour out the water from failed layering attempts.
After refilling with RT water, wait a full minute for the water to settle before adding colored water.
Inv 4.1, Step 6