Metric Units and Conversions

What Do You See?

What About Here?

How Many “Hands” Are you? Back in medieval times, horses were measured by ‘hands.’ Measure your arm in hands and write down how much you are:_________ What is the problem when you compare your answer to the rest of the class?

One township = 36 sections or 23,040 acres where an acre = 160 square poles = 100,000 square gunter links = 43,560 square feet = 10 chains where 1 chain = 22 yards, but the engineer’s chain = 100 feet. On the other hand, 1 barrel = 42 gallons or 196 pounds or 55 gallons. But 1 gallon = 4 quarts with 2 pints per quart or 4 cups. Unless it’s the Queen Anne wine gallon, the milk gallon, or the imperial gallon. However we have 62.4 pounds per cubic foot for water. Now then there is the statute mile, the league, the nautical mile, and the marine league.

SHEESH!!!! How do we fix this problem?

Important Facts Numbers in science always have UNITS Any number times 1 = the same number A standard in measurement is an exact quantity that everyone agrees to use A conversion factor is a fraction that = 1 Example – 1dozen/12 eggs is a conversion factor What are some conversion factors that you know?

Metric Measurement What can be measured?What unit? What equipment? Length Mass Volume Temperature Weight Meters ( m) Grams (g) Liters ( L) Degrees Celsius (°C) Newton (N) Metric Ruler Balance Graduated Cylinder Thermometer Scale

Decimal Move Method The metric system is based on multiples of 10 To convert from one unit to another you simply move the decimal left or right.

khdkUdcm King Henry’s dirty underwear does contain mold Kilo hecto deka UNIT deci centi milli (Meter, Liter, Gram)

Examples Convert 159 Kilometers (Km) to meters (m) Locate the decimal If you don’t see the decimal, it is behind the number so it is _____________. Stand on the kilo step. Walk to the meter step. You took _____ steps to the ______ so you move the decimal ____ steps to the ______ Answer:

Examples If the label on my bottle of vitamin C says that there are 1250 milligrams (mg) of vitamin C in each tablet, how many grams (g) of vitamin C are in each? Locate the decimal If you don’t see the decimal, it is behind the number so it is _____________. Stand on the milli step. Walk to the grams step. You took _____ steps to the ______ so you move the decimal ____ steps to the _____ Answer:

Examples I have kL of orange soda. Do I have enough to give each one of you a glass of soda? Convert kL to L. Locate the decimal If you don’t see the decimal, it is behind the number so it is _____________. Stand on the kilo step. Walk to the liter step. You took _____ steps to the ______ so you move the decimal ____ steps to the _____ Answer: