1. Making Measurements

2. International System of Measurements
Used by scientists around the world
Also known as the metric system
Based on multiples of ten

3. Common Prefixes Prefix Symbol Meaning Kilo- k 1,000 Hecto- h 100 Deka-da 10
Deci- d
0.1 (one tenth)
Centi- c
0.01 (one hundredth)
Milli- m
0.001 (one thousandth)

4. Length The distance between two points SI unit is the METER
Tools used include a meter stick or ruler
Light-year
Unit used for long distances in outer space
It is the distance light travels in a year
A measurement of distance NOT time

5. Volume The amount of space something takes up SI unit is the LITER
Tools used include graduated cylinder

6. Mass The amount of matter in object SI unit is the GRAM
Tools used include a balance

7. Density The mass per unit of volume; mass divided by volume
Expressed in g/cm3 for solids and g/mL for liquids and gases

8. Temperature SI uses the Celsius scale – measured in degrees Celsius
Water freezes at 0 degrees Celsius and boils at 100 degrees Celsius
Fahrenheit can be converted to Celsius
C=(F-32) * 5/9

9. Time
Measured in seconds (and minutes, hours, years, etc.)