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What measurements are part of the English measurement
system?
Inch
Foot
Yard
Mile
Ounce
Pound
Ton
Cup
Quart
Gallon
Cubic Foot
Cubic Yard
LENGTH WEIGHT VOLUME
English Conversions You Must Know
1 mile = 5280 feet
1 foot = 12 inches
1 pound = 16 ounces
1 minute = 60 seconds
1 hour = 60 minutes
1 week = 7 days
1 yard = 3 feet
What is the Metric System?•A system of measurement based on multiples of ten.
•Developed and first used by scientists in the 1700’s
•Used by most nations other than the US
What is the SI Measurement System?•Improved version of the metric system developed in mid 1900’s
Metric 4 US - Metric is the better system for America!
Why do scientists use the SI (metric) system?•Ease of using powers of 10•Common communication between scientists
What is a Standard?
An exact quantity that people agree to use for comparisons.
Metric units for which there is a standard are called fundamental units or basic units. These are
• meter (m) - length
• kilogram (kg) - mass
• second (s) - time
• kelvin (K)– temperature
• ampere (A)– electric current
• mole (mol)– amount of matter in a substance
• candela (cd)- intensity of light
What are some common metric units?
LENGTHMeter (m)
Centimeter (cm)
Kilometer (km)
Millimeter (mm)
MASS
VOLUMENewton (N)
WEIGHT
Gram
Kilogram
milligram
Liter (l)
Milliliter (ml)
Centimeter cubed (cm³)
Meter cubed (m³)
DENSITY
g/ml
g/cm³
Kg/m³
How do English units relate to Metric units?
1 meter ~ 39 inches
1 kilometer ~ 6/10 of a mile
1 liter ~ a quart
1 kilogram ~ 2 pounds
~
~
Common Metric PrefixesPrefix Symbol Meaning
Giga G 1 000 000 000
Mega M 1 000 000
Kilo- K 1 000
Hecto H 100
Deca Da 10
Deci d .1 or 1/10
Centi c .01 or 1/100
Milli m .001 or 1/1000
Micro µ .000001 or 1/1000000
Nano n .000000001
Derived Units
A portion or multiple of a fundamental unit or a combination of fundamental units.
Examples:
millimeter, kilometer, and cm³ are derived units of meter
gram and milligram are derived units of kilogram
g/cm³ is a combination of units
Which of the following are derived units?
• Minutes
• Liters
• Kilogram
• m²
• Kelvin
• m/s
What SI (metric) unit would be used for the following?
• Mass of sugar cube -
• Volume of water in measuring cup -
• Length of your shoe -
• Volume of gallon of milk -
• Mass of yourself -
• Distance from here to office -
• Distance from here to Columbus -
1. The distance between Opelika & Phenix City is about 50 _______.
2. A postage stamp has a mass of about 15 ____________.
3. An eye dropper full of medicine contains about 1 __________.
4. A full half gallon of milk is about 2 _____________.
5. The length of a pencil is about 12 _________________.
6. A paper clip has a mass of about 1 ___________
What would the correct unit be when using the Metric System?
How do you convert from one metric unit to another?
By multiplying or dividing by factors of 10.
This can easily be done by moving the decimal to the right when multiplying and moving the decimal to the left when dividing.
The mnemonic below is also very helpful.
K H D B (meter) d c m (gram ) (liter)
How do you convert from one metric unit to another?
K H D B (meter) d c m (gram ) (liter)
50 m = ___________cm
80 m = ______________km
780 mm = _______________m
780 mm = ___________km
456.3 cm = ___________ m
How do you convert from one metric unit to another?
K H D B (meter) d c m
480 g = ___________mg
480 g = _____________kg
6 kg = ____________ g
6 kg = __________cg
450.60 g = ____________mg
K H D B (meter) d c m (gram ) (liter)
How do you convert from one metric unit to another?
K H D B (meter) d c m
3 L = ______________mL
34.6 mL = ____________cL
4 kL = _____________L
K H D B (meter) d c m (gram ) (liter)
English to Metric Conversion Units
1 inch = 2.54 cm
1 mile = 1.61 km
1 pound = .45 kilogram
1 quart = .95 liters
1 ml = 1 cm³