1. Lecture: Metric System

2. 1.Metric system: a language with its own vocabulary consisting of 2 parts: -unit: category to measure, example: meter, gram -prefix: word precedes the unit = #, example: kilo A. called SI system: system international B. based on the number 10 1. why? 2. where is it used? 3. is it more accurate than the English system?

3. C. Length = meter (m), what dimension is this? 1. meter = m, example? 2. decimeter = dcm, example? 3. centimeter = cm, example? 4. millimeter = mm, example? 5. about equal to a yard 6. one inch = 2.54 cm D. Area = length x width meter squared (m 2 ), dimension?

4. E. Volume = 1. meter cubed (m 3) for solids, dimension ? 2. liter for liquids (L), about equal to a quart 3. 1 milliliter (mL) = 1 cm 3 : use as a conversion between solid and liquid volume F. Mass = gram (g); kilogram = 2.2 pounds G. Temperature = Celsius (C) 1. what is the FP (___) and BP (___) of H 2 O ? 2. room temp. = 21 C to 25 C 3. body temp. = 36 C

5. Metric tree: base units LengthAreaVolumeMassTempera ture MeterSq meterCubic meter/ Liter GramCelcius mm2m2 m3Lm3L gC 1 st dimension 2 nd dimension 3 rd dimension heavyenergy 2TTrTTr 2 --

6. Metric terminology prefixkilohectodecabasedecicentimillimicro symbol khdaUnit (meter, gram, Liter) dccmiliy number 1,0001001010.10.010.001 0.000001 wordThousa nd Hundr ed TenOneTenthHundre dth Thous andth milliont h

7. Primary prefixes: symbolnumbernumber kilo k1000 thousand centi c0.01 1/100 milli m 0.001 1/1000 micro (<y)0.000001 1/millionth nanon 0.0000000011/billionth Distance of the Boulder Bolder? Ipods are made on what size scale?

8. Metric bar: kilo hecto deca (Base) deci centi milli micro nano !______!______!_____!______!_____!_____!____!____!____!____!_____!_____! 1000 100 10 1 0.1 0.01 0.001 ? ? 0.000001 ? ? ?  <1 Five steps to conversion: 1, identify what prefix you know/are given on the metric bar 2. Identify what prefix you are going to on the metric bar 3. Show arrow from “know to going” on metric bar 4. Count # of places the decimal moves on the metric bar 5. Change your original # to the new # with its new prefix Convert these values: 1. 89 kg= ? mg 2. 0.0345 L= ? cL 3. 176 mm= ? m