1. CATALYST 1. 5.8mL = ____ L 2. 89km = ____m 3. 187598cs = _ks 4. 100dg = ___Dg

2. Lab Equipment & Uncertainty

3. Objectives SWBAT identify & use lab equipment in the classroom.

4. What piece of lab equipment would you use to measure the length of a cricket?  Metric Ruler

5. What is the length of this cricket?  What is the largest digit you know for certain?

6. What is the length of this cricket?  What is the largest digit you know for certain? 1

7. What is the length of this cricket?  What is the largest digit you know for certain? 1  How many tick marks are from 1 to 2?

8. What is the length of this cricket?  What is the largest digit you know for certain? 1  How many tick marks are from 1 to 2? 10

9. What is the length of this cricket?  What is the largest digit you know for certain? 1  How many tick marks are from 1 to 2? 10  What is the next digit you can be certain about?

10. What is the length of this cricket?  What is the largest digit you know for certain? 1  How many tick marks are from 1 to 2? 10  What is the next digit you can be certain about? 1.3

11. What is the length of this cricket?  This cricket is 1.3cm using the ruler.

12. What is the length of the miniature Steve Nash?  This cricket is 1.3cm using the ruler.

13. What is the length of the miniature Steve Nash?  This cricket is 1.3cm using the ruler.  Steve Nash is 2.71cm.  Or 2.72cm.  Or 2.73cm.  Why? The last digit (1,2, 3) is UNCERTAIN.

14. What piece of equipment could you use to measure the amount of soda in a can?

15. What piece of equipment could you use to measure the amount of soda in a can? Graduated Cylinder

16. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.)

17. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.)  35mL or 36mL?

18. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.)  You read at the bottom line (MENISCUS).

19. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.)  35mL is in here.

20. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.) 

21. How much liquid is in this graduated cylinder?  (Hint: You read this JUST like a ruler.)  36.4mL, 36.5mL, 36.6mL would all be accurate!

22. How would you measure the mass of miniature Steve Nash?  (Hint: You r 

23. How would you measure the mass of miniature Steve Nash?  Triple Beam Balance 

24. How would you measure the mass of miniature Steve Nash?  Triple Beam Balance 

25. How would you measure the mass of miniature Steve Nash?  Triple Beam Balance 

26. Summary/Questions  Main Headings: Ruler, Graduated Cylinder, Triple Beam Balance.  Take 3 minutes to write a summary that discusses the three main topics.

27. Reminders  HW Packet #1 Due Friday!  Quiz #1 on Friday!