Ppt prefixes and equivalences

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Information about Ppt prefixes and equivalences

Published on February 20, 2014

Author: lilianaardila79

Source: slideshare.net

GOAL 3 Measurements LecturePLUS Timberlake 1

Metric Prefixes  Increase or decrease basic unit by 10  Form new units larger or smaller than the basic units  Indicate a numerical value prefix = value 1 kilometer = 1000 meters 1 kilogram = 1000 grams LecturePLUS Timberlake 2

Prefixes that Increase A Unit Prefix Symbol Value giga- G 1 000 000 000 megakilo- M k 1 000 000 1 000 LecturePLUS Timberlake 3

Prefixes that Decrease A Unit Prefix Symbol Value decicentimillimicronano d c m  (mu) n 0.1 0.01 0.001 0.000 001 0.000 000 0001 LecturePLUS Timberlake 4

Learning Check Match 1) length 2) mass 3) volume ____ A. A bag of tomatoes is 4.6 kg. ____ B. A person is 2.0 m tall. ____ C. A medication contains 0.50 g Aspirin. ____ D. A bottle contains 1.5 L of water. LecturePLUS Timberlake 5

Solution Match 1) length 2) mass 3) volume _2 A. A bag of tomatoes is 4.6 kg. _1_ B. A person is 2.0 m tall. _2_ C. A medication contains 0.50 g Aspirin. _3_ D. A bottle contains 1.5 L of water. LecturePLUS Timberlake 6

Learning Check Select the unit you would use to measure A. Your height 1) millimeters 2) meters 3) kilometers 2) grams 3) kilograms B. Your mass 1) milligrams C. The distance between two cities 1) millimeters 2) meters 3) kilometers D. The width of an artery 1) millimeters 2) meters LecturePLUS Timberlake 3) kilometers 7

Learning Check Indicate the prefix to use for 1. A mass that is 1000 times greater than 1 gram 1) kilo 2) milli 3) mega 2. A length that is 1/100 of 1 meter? 1) deci 2) centi 3) milli 3. A unit of time that is 1/1000 of a second. 1) nanosecond 2) microsecond 3)millisecond LecturePLUS Timberlake 8

Equalities State the same measurement in two different units length 10.0 in. 25.4 cm LecturePLUS Timberlake 9

Some Metric Equalities Length 1m = 100 cm = 1000 g = 1000 mL Mass 1 kg Volume 1L LecturePLUS Timberlake 10

Learning Check A. 1000 m = 1 ___ 1) mm 2) km 3) dm B. 0.001 g = 1 ___ 1) mg 2) kg 3) dg C. 0.1 L = 1 ___ 1) mL 2) cL 3) dL D. 0.01 m = 1 ___ 1) mm 2) cm 3) dm LecturePLUS Timberlake 11

Learning Check Give the value of the following units: A. 1 kg = ____ g 1) 10 g 2) 100 g 3) 1000 g B. 1 mm = ____ m 1) 0.001 m 2) 0.01 m 3) 0.1 m LecturePLUS Timberlake 12

Some American Equalities 1 ft = 12 inches 1 lb = 16 1 quart = 2 pints 1 quart = 4 cups oz The quantities in each pair give the same measured amount in two different units. LecturePLUS Timberlake 13

Some Metric-American Equalities 1 in. = 2.54 cm 1 qt = 946 mL 1L = 1.06 qt 1 lb = 454 g 1 kg = 2.20 lb Remember these for exams. LecturePLUS Timberlake 14

Equalities given in a Problem Example 1 At the store, the price of one pound of red peppers is $2.39. Equality: 1 lb red peppers = $2.39 Example 2 At the gas station, one gallon of gas is $1.34. Equality: 1 gallon of gas LecturePLUS Timberlake = $1.34 15

Conversion Factors Fractions in which the numerator and denominator are quantities expressed in an equality between those units Example: 1 in. = 2.54 cm Factors: 1 in. 2.54 cm and LecturePLUS Timberlake 2.54 cm 1 in. 16

Learning Check Write conversion factors that relate each of the following pairs of units: A. Liters and mL B. Hours and minutes D. Meters and kilometers LecturePLUS Timberlake 17

Solution A. quarts and mL 1L and 1000 mL 1 L = 1000 mL 1000 mL 1L B. hours and minutes 1 hr = 60 min 1 hr and 60 min 60 min 1 hr C. meters and kilometers 1 km = 1000 m 1 km and 1000 m 1000 m 1 km LecturePLUS Timberlake 18

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