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Measuring With Scientific Units. MEASUREMENT. MEASUREMENT Measurement is in NUMBERS and UNITS. Most of the world uses the METRIC SYSTEM Based on the ‘NUMBER TEN’ Based on the METER. MEASUREMENT: SYMBOLS. MEASUREMENT: UNITS. REVIEW: LENGTH METER: distance REVIEW: VOLUME
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MEASUREMENT • MEASUREMENT • Measurement is in NUMBERS and UNITS. • Most of the world uses the METRIC SYSTEM • Based on the ‘NUMBER TEN’ • Based on the METER
MEASUREMENT: UNITS • REVIEW: LENGTH METER: distance REVIEW: VOLUME LITER: Volume = length x width x height = cm3
MEASUREMENT: UNITS WEIGHT AND MASS GRAM: mass & weight • WEIGHT depends on WHERE YOU ARE IN THE UNIVERSE • Changes depend on GRAVITY • Mass depends onTHE NUMBER AND TYPE OF ATOMS • ALWAYS STAYS THE SAME
MEASUREMENT: UNITS • TEMPERATURE AND TIME CELSIUS: temperature • TEMPERATURE measures AMOUNT OF HEAT • WHAT IS YOUR BODY TEMPERATURE? • 98.6 degrees Fahrenheit • 37 degrees Celsius SECONDS: time • TIME measures ORDER OF EVENTS
MEASUREMENT: UNITS DENSITY • GRAMS PER VOLUME: density • Density = AMOUNT OF MASS PER VOLUME = grams / milliliter = grams / cm3 = MASS / VOLUME PURE WATER = 1g / mL LEAD = 11g / mL
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