Objective: Identifying what units are used for different measurements

and how to convert measurements.

The Metric System

International System of UnitsInternational System of Units (SI)

Seven units of measurement known as the basic set which other units are derived from

International System of UnitsUnit Symbols

Symbols used to define a number based on what is being measuredLength = meter (m)Mass = kilogram (kg)Force = newton (N)Time = second (s)Area = square meters (m2)Volume = cubic meters (m3)Density = grams per centimeters

cubed(g/cm3)Temperature = kelvin (K)

ConversionsTemperature Conversion

°F to °C = 5/9(°F - 32 °)°C to °F = 9/5(°C) + 32 °°C to K = °C + 273.16

Example 1: Convert 32 °F to °C.

Example 2: Convert 29 °C to K.

Conversionskilo

hecto

deka

Base Unit de

ci

centi

milli

Steps:1. Find the prefix.

(beginning of the word)2. Find out what you are

converting to.3. Count the number of

stairs you need to move.4. What direction did you

move in?5. Move the decimal point

the same to same number of stairs and the same direction of motion.

Conversionkilo

hecto

deka

Base Unit de

ci

centi

milli

Example 1: Convert 45 centimeters into meters.

Example 2: Convert 9 kilometers into decimeters

CalculationsDensity

The amount of mass (g) in a given volume (cm3) of an object

Density = mass / volumeHigh Density = SinkLow Density = FloatWater has a density of 1g/cm3