Transcript Measurement - A Common Language

Measurement - A Common Language
Metric System
● Universal system of measurement
● Based on the number 10
International System of Units (SI)
● abbreviated SI
● allows scientists to compare data and
communicate with each other about their results
Common SI 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)
Length
● common unit of
length is the meter
Common Conversions for
Length
1 km = 1,000 m
1 m = 100 cm
1 m = 1,000 mm
1 cm = 10 mm
Mass
● basic unit of mass is the
kilogram (kg)
● mass measures the amount
of matter an object contains
● mass is NOT the same as
weight
● weight is the measure of the
force of gravity on an
object
Common Conversions
for Mass
1 kg = 1,000 g
1 g = 1,000 mg
Volume
● volume is the amount of
space an object takes up
● liquids:
o liter (L)
o milliliter (mL)
● solids:
o cubic centimeter (cm3)
Common Conversions
for Volume
1 L = 1,000 mL
1 L = 1,000 cm3
1 mL = 1 cm3
Volume
Volume = Length x Width x Height
● equation used for a solid object
Example:
Volume = 20 cm x 6 cm x 25 cm = 3,000 cm3