Measuring With Scientific Units

MEASUREMENT MEASUREMENT Measurement is in NUMBERS and UNITS. Most of the world uses the METRIC SYSTEM –B–Based on the ‘NUMBER TEN’ –B–Based on the METER

MEASUREMENT: SYMBOLS Base quantityNameSymbol Lengthmeterm Massgramg Timesecondss electric currentAmpereA temperature Celsius oCoC amount of substanceMolemol luminous intensityCandelaCd

MEASUREMENT: UNITS REVIEW: LENGTH METER: distance REVIEW: VOLUME LITER: Volume = length x width x height = cm 3

WEIGHT AND MASS GRAM: mass & weight WEIGHT depends on WHERE YOU ARE IN THE UNIVERSE –C–Changes depend on GRAVITY Mass depends on THE NUMBER AND TYPE OF ATOMS –A–ALWAYS STAYS THE SAME

TEMPERATURE AND TIME CELSIUS: temperature TEMPERATURE measures AMOUNT OF HEAT –W–WHAT IS YOUR BODY TEMPERATURE? –9–98.6 degrees Fahrenheit –3–37 degrees Celsius SECONDS: time TIME measures ORDER OF EVENTS

DENSITY GRAMS PER VOLUME: density Density = AMOUNT OF MASS PER VOLUME = grams / milliliter = grams / cm 3 = MASS / VOLUME PURE WATER = 1g / mL LEAD = 11g / mL

MEASUREMENT: PREFIXES PrefixSymbol Factor Number Factor Word kilok1,000 unitsThousand hectoh100 unitsHundred decada10 unitsTen Base unitm, g, L1 unitmeter, gram, Liter decid1/10 unitTenth centic1/100 unitHundredth millim 1/1,000 unit Thousandth micro  1/1,000,000 unit Millionth

MEASUREMENT: PREFIXES king hector doesn’t buy dragons costing millions

CONVERSIONS Conversions are easy because they’re BASED ON THE NUMBER TEN Just MOVE THE DECIMAL! Setting up the Divisions k  h  da  base  d  c  m 1,000 units 100 units 10 units 1 unit 1/10 unit 1/100 unit 1/1,000 unit

CONVERSIONS k  h  da  base  d  c  m 1,000 units 100 units 10 units 1 unit 1/10 unit 1/100 unit 1/1,000 unit If you’re going from SMALL amounts to LARGE amounts, move the decimal TO THE LEFT 300 centimeters = 3.00 meter 56 liters = ______ kiloliters?.056 kL 82.3 milligrams = _______ decigrams?.823 dg

CONVERSIONS k  h  da  base  d  c  m 1,000 units 100 units 10 units 1 unit 1/10 unit 1/100 unit 1/1,000 unit If you’re going from LARGE amounts to SMALL amounts, move the decimal TO THE RIGHT 95 grams = 95,000 milligrams 20.5 decameters = _________ meters? 205 m 6.82 liters =.0682 cL centiliters? Good job!682 cL