1. DO NOW 1. Please glue in pages 108 and 109 2. Please update your Table of Contents (page 101) to include: 3. 4.1 Deep Ocean Currents 108, 109

2. Hope everybody had a fantastic break!

3. OVERVIEW: NEXT FEW WEEKS: This week: Ocean and currents Next few weeks: weather!

4. REMINDER- CURRENTS → Perpetual Ocean Youtube video

5. OHHH, I REMEMBER...

6. SURFACE CURRENTS VS. DEEP OCEAN CURRENTS

8. COFFEE HOUR 1. one round of rocks paper scissors 2. loser: describe how surface currents move (start sentence with “In surface currents, water moves...”) winner: describe how deep ocean currents move (start sentence with “in deep ocean currents, water moves...”)

9. What causes deep ocean currents to move vertically (up and down)?

10. ANIMATION: HOT WATER AND COLD WATER → Reminder: density is basically how tightly packed together the molecules are! → http://www.middleschoolchemistry.com/multime dia/chapter3/lesson6#cold_and_hot_water http://www.middleschoolchemistry.com/multime dia/chapter3/lesson6#cold_and_hot_water → Remember: water molecules want to snuggle together when they're cold!

11. FILL IN USING ANIMATION

12. WE'RE ABOUT TO DO AN EXPERIMENT!

13. EXPERIMENT → http://www.middleschoolchemistry.com/multime dia/chapter3/lesson6#hot_water_on_cold_water http://www.middleschoolchemistry.com/multime dia/chapter3/lesson6#hot_water_on_cold_water Fill in this box:

14. POST IT → Answer the question: how does temperature create deep ocean currents?

15. ONE MORE THING! Brainstorm: what else is in ocean water?

16. ONE MORE THING! Brainstorm: what else is in ocean water?

17. Amount of salt in water

18. POP QUIZ Which water below has a higher salinity?

19. POP QUIZ Which water below has a higher salinity? The water on the right has a higher salinity because...

20. DRAW

21. PREDICT

22. BILL NYE VIDEO → As you watch Bill Nye video, fill this out!

23. POST IT -How does salinity create deep ocean currents?

24. INDEPENDENT WORK Please silently and independently complete page 108.