1. SI or SYSTEM INTERNATIONAL
Metric Measurements
SI or SYSTEM INTERNATIONAL

2. Why Use the Metric System?
A. It’s easier to convert from one unit to the next
Based on powers of 10
B. Most of the world uses it

3. Mass How much matter is in an object
Similar to weight (downward force due to gravity)
Measured in grams using a balance

4. Length
How FAR or LONG
Measured in meters using a ruler
Or cm or mm

5. Volume How much SPACE an object takes up
A. Measured in LITERS for liquids using a graduated cylinder
B. Measured in CUBIC CENTIMETERS (CC’S) FOR RECTANGLES
V = L X W X H
C. Use water displacement for irregular shaped objects
Measure the change in water level when object is added
1 CUBIC CEMTIMETER = 1 MILLILITER = 1 GRAM OF WATER

8. Temperature HOW FAST particles vibrate Measured in degrees Celsius
Internal kinetic energy
Measured in degrees Celsius

9. Density How close particles are packed together
How heavy for it’s size
Density = Mass/Volume
grams/milliliters
Measured in grams/liter or
grams/milliliter

11. Water Density
Every gram of water takes up one milliliter of space at room temperature so water has a density of 1 gram/milliliter
Objects with a density GREATER than that SINK!
Objects with a density LESS than that FLOAT!