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

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Presentation transcript:

CATALYST mL = ____ L 2. 89km = ____m cs = _ks dg = ___Dg

Lab Equipment & Uncertainty

Objectives SWBAT identify & use lab equipment in the classroom.

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

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

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

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?

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 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?

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

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

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

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.

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

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

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

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

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

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

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

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!

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

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

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

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

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

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