Chapter Objectives 5-7Chapter Objectives 5-7

5. Recognize the units used in the 5. Recognize the units used in the International System of International System of measurement.measurement.

6. Make conversions within the SI.6. Make conversions within the SI. 7. Distinguish between mass and 7. Distinguish between mass and

weight.weight.

International System of International System of MeasurementMeasurement

All measurements have a All measurements have a numbernumber and a and a unitunit

Basic UnitsBasic Units

Length=meterLength=meter Volume=literVolume=liter Mass=gramMass=gram

Mass vs. WeightMass vs. Weight

MassMass WeightWeightAmount of matterAmount of matter Gravitational Gravitational

attractionattraction

Measured in grams Measured in grams (g)(g)

Measured in newtons Measured in newtons (N)(N)

Measured with a Measured with a balancebalance

Measured with a Measured with a spring scalespring scale

Common prefixes used in SI Common prefixes used in SI SystemSystem

Kilo (K)=1000Kilo (K)=1000 Hecto (h)=100Hecto (h)=100 Deka (da)=10Deka (da)=10 Deci (d)=0.1Deci (d)=0.1 Centi (c)=0.01Centi (c)=0.01 Milli (m)=0.001Milli (m)=0.001

King Henry Died Unexpectedly Drinking Chocolate Milk.

Kilo-Hecto-Deka-UNIT-Deci-Centi-Milli

http://www.nhc.noaa.gov/refresh/graphics_at4+shtml/?swath?large

1 million microphones = 1 megaphone1 million microphones = 1 megaphone1 million bicycles = 2 megacycles1 million bicycles = 2 megacycles52 cards = 1 decacards52 cards = 1 decacards1/2 lavatory = 1 demijohn1/2 lavatory = 1 demijohn2000 mockingbirds = 2 kilomockingbirds2000 mockingbirds = 2 kilomockingbirds3-1/3 tridents = 1 decadent3-1/3 tridents = 1 decadent10 monologs = 5 dialogues10 monologs = 5 dialogues2 monograms = 1 diagram2 monograms = 1 diagram1 millionth of a fish = 1 microfiche1 millionth of a fish = 1 microfiche10 rations = 1 decoration10 rations = 1 decoration10 millipedes = 1 centipede 10 millipedes = 1 centipede

Advantages of SI SystemAdvantages of SI System

Everything is in multiples of 10Everything is in multiples of 10 The rest of the world uses itThe rest of the world uses it The names used are logicalThe names used are logical