1. September 16, 2009
1. What instruments can be used to take the following measurements: Length, Mass, Volume?
2. When somebody says they made an accurate measurement, what do they mean?

2. Length Equipment: Rulers and meter sticks
Tip: You can have one decimal beyond what you are certain of.

3. Mass Equipment: Triple Beam Balance, Spring Scale
Tip: Add together all three “riders”

4. Time Equipment: Stopwatch Tip: Round to hundreth (2 decimal places)
Tip: Remember SECONDS

5. Temperature Equipment: Thermometer
Tip: Watch for negative and positive
Tip: Be aware of the intervals!

6. Solid Volume Equipment: Meter stick, Graduated Cylinder
Tip: 1 mL = 1 cm3
Tip: V = Length x Width x Height

7. Liquid Volume Equipment: Graduated Cylinder or Beaker
Tip: Bottom of Meniscus
Tip: INTERVALS!

9. ACCURACY
Means your measurement is close to the perfect or actual value

10. PRECISION
Means all values are close to each other but not necessarily close to the actual or perfect value

11. Accurate and Precise

12. AGENDA ITEMS