METRIC SYSTEM CONVERSION FACTORS

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1 METRIC SYSTEM CONVERSION FACTORS LENGTH 1 m = 1 cm 1 m = in 2.54 cm = 1 in 1 m = 1 mm 1 m = 1.9 yd 1 km =.621 mi 1 cm = 1 mm 1 cm =.394 in 3 ft = 1 yd 1 km = 1 m 1 cm =.328 ft 1 ft = 3.48 cm 6 1 m = 1 um km hm dam m dm cm mm VOLUME 1 L = 1 ml 12 fl oz = 354 ml 1 L = 1.6 qt 1 kl = 1 L 1 g =.35 oz 1 L =.264 gal 3 1 L = 1 cm 1 L = 2.11 pt 3 1 cm = 1 ml m = ft kl hl dal L dl cl ml MASS 1 g = 1 mg 1 lb = g 1 kg = 2.2 lb 1 kg = 1 g 1 lb =.454 kg 1 oz = g kg hg dag g dg cg mg TEMPERATURE F =( 9/5 C) + 32 C = 5/9 ( F - 32) C = K K = C TIME 1 min = 6 sec 1 hr = 6 min ks hs das s ds cs ms

2 THE METRIC SYSTEM CLASS NOTES 1. What is the Metric System -metric system >> system of measurements using standard unit and prefixes that reflects the multiplication of these unit by powers of ten -also called the SI System >> international system of measurements which means that every nation would have the same system of measurement -unfortunately the united states is the only country still using the English system of measurement so students still have to learn how to convert from English to metric and metric to English. 2. Metric System Prefixes Prefix Symbol Amount Power of Ten nano n. 1 X 1-9 micro u. 1 X 1-6 milli m.1 X 1-3 centi c.1 X 1-2 deci d.1 X 1-1 deka da 1 X 1 hecto h 1 X 1 2 kilo k 1 X 1 3 mega M 1 X Standard Units -the metric system has standard units -units > symbol that gives meaning to a number Measuremen t of Standard Unit Unit Symbol notes Length meter m Volume Liter L Mass gram g actual standard unit is the kilogram kg Temperature Celsius C actual standard unit is the kelvin K Time second s or sec

3 3.1 Length -length measures how long, wide, or tall something is -the standard unit of length is the meter <m> -a metric ruler is used to measure length -every mark on the ruler is 1 millimeter mm -every number is 1 centimeter cm reading the ruler -example >> = 27 mm millimeters -example >> = 4.2 cm centimeters -numbers must include the units -units tells you what the number means -kilometer = km meter = m centimeter =cm millimeter =mm 3.2 Volume -volume > is the amount of space an object occupies -the standard unit of volume is the liter <L> -kiloliter = kl liter = L milliliter = ml cubic centimeters = cc -there are 3 ways of measuring volume -by using containers -by measuring with a ruler -by the water displacement method 3.31 Measuring Volume of Regular Shaped Objects -a regular shaped object is any object that can be measured on all sides using a ruler -formula for volume of a regular shaped object Volume = length X width X height Or Vol = (Lwh) -the units are given in cm 3 -do examples

4 3.32 Calculating the Volume of an Irregular Shaped Object - also called water displacement method -an irregular shaped object is any object that can not by measure by a ruler on all sides. -formula for volume of a regular shaped object -Volume of object = volume final - volume initial or Vol obj = Vol fin - Vol i -do some examples 3.3 Mass -mass > the amount of matter in an object -mass is different from weight -weight > the amount of force gravity exerts on an object -kilogram = kg gram = g milligram = mg -mass is measure in 2 ways -using a balance or scale -using the displacement method to calculate mass 3.31 How to Read a Balance -demonstrate how to read a balance 3.32 Using the Displacement Method to Calculate Mass -use formula Mass of object or substance = mass final - mass initial or Mass = mass - mass obj F i -do some examples 3.4 Temperature -measurement used to determine heat, how hot or cold something is -temperature >> is a measure of the average kinetic energy (movement) of particles -temperature is usually measure by a thermometer -the standard unit of temperature is degrees Celsius C -measurements of temperature Celsius = C Fahrenheit = F Kelvins = K 3.41 Formulas for Temperature Conversions -the kelvin scale measures absolute zero at -the Celsius scale measure absolute zero at -273 C -absolute zero >> the temperature at which all molecules ceases movement

5 Type of Temp Symbol Conversion Formula Freezing Pt Boiling Pt Fahrenheit F F = (9/5 C) Celsius C C = 5/9 ( F - 32 ) 1 Kelvin K K = C How to Do Temperature Conversions -do some temperature conversion examples 3.5 Time -in Biology Time is measured in seconds s or sec

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