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. 11-9

5. Open your Notebook to NB sheet 10 5 minutes to answer
Do Now
Open your Notebook to NB sheet 10
5 minutes to answer
Inv 4.1, Step 28–31

6. Reasons for Layering
What variable made it possible to layer the salt solutions?
If two solutions have different densities, which one layers on top?
Why do you think the red water layered on top of the room-temperature water?
Why do you think the blue water layered under the room-temperature water?
What happened when the layered vial sat undisturbed for 5 minutes?
What might happen if you put a layered vial in a cup of hot water? Why?
Inv 4.1, Step 11

7. Groups of 4 Room Temperature Water (experimental vial)
Leave vial undisturbed on your table

8. Notebook sheet 13 Discuss your observations with your group.
Complete NB sheet 13 question #s 1-5

9. Layering Hot and Cold Water
Materials
3 Water Vials with caps
Hot
Cold
Room Temperature
2 Plastic-foam cups
2 Pipettes
1 Plastic cup
Inv 4.1, Steps 3–5

10. Layering Hot and Cold Water
Carefully squeeze the pipette with blue (cold) water into the bottom of the rt water vial.
Carefully squeeze the pipette with red (hot) water into the top of the rt water vial.
Inv 4.1, Steps 3–5

11. Place your vial in a ¼ L container with hot water. What do you see?
Heat the Vial
Place your vial in a ¼ L container with hot water.
What do you see?
How do you explain your observations?
How could your observations be explained by density?
What might be happening at the particle level?
Inv 4.1, Step 12

12. Make a large close-up diagram of the vial on the next page in your NB.
Heating the Vial
Make a large close-up diagram of the vial on the next page in your NB.
Use arrows to show the movement of the colored water.
Clean up
Return materials to stations
Rinse out materials if instructed
Inv 4.1, Step 12

13. 11-10

14. Do Now Observe the mixed layers in the straw
Be prepared to answer the following question:
What could cause the salt water to mix like this?

15. Do Now Observe the mixed layers in the straw
What could cause the salt water to mix like this?
Liquid and gas particles are in constant motion.
There was slow, constant movement of the water particles, and over time, the salt and the food coloring in the water became equally mixed because of this movement.

16. Online Activity-Fluid Convection
Inv 4.1, Step 14

17. Particle Model for Water Density
Imagine water with its particles moving around randomly.
When we increased the heat of the water, we increased the kinetic energy of the water particles.
When particles increase in energy, they move faster and bang into each other with greater frequency and force.
This drives the particles farther apart.
When the particles are forced farther apart, the water becomes less dense.
Sample storyline
Inv 4.2, Step 17

18. Particle Model for Water Density
We now have two ways to change the density of a substance.
Physical force (air in a syringe)
Adding/removing heat energy
Is the hot red water more dense, the same density, or less dense than the room-temperature water?
Why do you think the hot red water sank to the bottom?
What happened to the particles in the red water as the water cooled?
Sample storyline
Inv 4.2, Step 17

19. Online Activity
Sample storyline
Inv 4.2, Steps 17

20. NB sheet 13
Answer #6 on the Layering Hot and Cold Water sheet

21. Fluids review Fluids can flow Gasses and liquids are fluids
When a mass of fluid, either liquid or gas, is warmer or colder than the surrounding fluid, the mass will rise or sink in the surrounding fluid.
Sample storyline
Inv 4.2, Step 18

22. Convection and Energy Transfer
This motion of masses or streams of fluid, caused by difference in density resulting from temperature, is convection.
Convection moves the heated fluid from one place to another.
This is one way energy transfers.
Convection happens only in fluids, where particles are free to flow.
Sample storyline
Inv 4.2, Step 18

23. Do Now
Copy the following Big Ideas into the Big Ideas section of your notebook.
If you don’t have a big ideas section, make one that is 2 pages, and tab it.

24. Record Big Ideas Less-dense fluids float on more-dense fluids.
Particles in a warm fluid move faster than in cooler fluids and have more space between them, making the fluid less dense.
Particles in a cool fluid move more slowly than in warmer fluids and have less space between them, making the fluid more dense.
Convection is one way heat (in the form of heated matter) moves from one place to another.
Sample storyline
Inv 4.2, Step 19

25. Density Reading -5 min Attach NB sheets 14-16 into your NB
Underline or highlight important points
Circle any words you don’t know
Put a question mark next to sections you have questions about
Make an arrow next to interesting ideas
Answer Think questions in NB if done early
P in text
Sample storyline
Inv 4.2, Step 20

26. Draw 2 small 1cm wide boxes (or cubes)
Wrap-Up/Warm-Up
Draw 2 small 1cm wide boxes (or cubes)
Fill each box with dots to represent particles
One dense substance
One less dense substance
Inv 4.2, Steps 22–23

27. Vocabulary
Convection- heat transfer in a fluid in which hot fluid rises and cold fluid sinks, setting up a cycle
Convection cell- mass of fluid flowing in a cycle in an area
Energy transfer- the movement of energy from one place or form to another; the process that drives the cycle of convection

28. Vocabulary Fluid- substance that can flow, such as a gas or liquid
Model- an explanation or representation of an object, system, or process that cannot be easily studied
If done early, add to your index

29. Revisit the Focus Question: How does heat affect density of fluids?
FQ 4.2: Convection in Air
Revisit the Focus Question:
How does heat affect density of fluids?
Answer in you NB now
Inv 4.3, Step 2

30. Do Now
Answer the Think Questions at the end of the Density Reading in your NB
Finish your answer to the Focus Question
Read Density with Dey on p.37 when done
Answer the questions on the separate piece of paper provided

31. Density with Dey reading
Read p in the text
Use the paper provided to hand in.
Put your name and period # on the paper.
Answer the questions at the end of the reading on the paper and hand in.

32. Density- Class reading
Discussion of text
P.34-36