MeasurementMeasurement

MeasurementMeasurement SI Standard System of International Units SI Standard System of International Units

or Metric Systemor Metric System Uses 10 as a baseUses 10 as a base Always estimate one unit/place further Always estimate one unit/place further

than what your measuring device allowsthan what your measuring device allows

Direct InstrumentsDirect Instruments

Direct MeasurementsDirect Measurements Can be made with no calculationsCan be made with no calculations It is recorded in one stepIt is recorded in one step

LengthLength

LengthLength SI unit is the meter (m)SI unit is the meter (m) 1 km = .6 miles or 1 mile = 1.6 km (p.909)1 km = .6 miles or 1 mile = 1.6 km (p.909) Instrument: Ruler or Meter StickInstrument: Ruler or Meter Stick

MassMass

Mass:Mass: a measure of an object’s matter; a measure of an object’s matter; depends on the atoms that make up the depends on the atoms that make up the

object; object; SI Unit: Kilogram (kg)SI Unit: Kilogram (kg) Instrument: Triple Beam Balance or ScaleInstrument: Triple Beam Balance or Scale

WeightWeight

WeightWeight a measure of the gravitational force on an a measure of the gravitational force on an

objectobject Unit: Newton (N)Unit: Newton (N) Instrument: Spring ScaleInstrument: Spring Scale

TemperatureTemperature

Temperature: a measure of the average Temperature: a measure of the average movement of particles for a given object; movement of particles for a given object;

Unit: Degrees Kelvin (K) or Celsius (C)Unit: Degrees Kelvin (K) or Celsius (C) Instrument: Thermometer Instrument: Thermometer

TemperatureTemperature

Temperature: Temperature: Conversions:Conversions:

0C = 5/9 (F-32)0C = 5/9 (F-32) 0F = 9/5 C+320F = 9/5 C+32 Kelvin = C+273Kelvin = C+273

VolumeVolume

Volume: a measure of the space occupied Volume: a measure of the space occupied by an object; by an object;

Unit: Liter (L)* Unit: Liter (L)* Instrument: Graduated CylinderInstrument: Graduated Cylinder

TimeTime

Time: Time: Unit: Second (s or sec)Unit: Second (s or sec) Instrument: Stopwatch or clockInstrument: Stopwatch or clock

Derived MeasurementsDerived Measurements

Derived QuantitiesDerived Quantities MustMust be calculated be calculated Cannon be recorded in one stepCannon be recorded in one step

DensityDensity

Density: a measure of the amount of matter Density: a measure of the amount of matter that occupies a given volume; that occupies a given volume;

Formula: Mass divided by Volume (m/v)Formula: Mass divided by Volume (m/v) Unit: grams per cubic centimeterUnit: grams per cubic centimeter Instrument: Balance and Ruler or Meter Instrument: Balance and Ruler or Meter

StickStick

AreaArea

Area: a measure of surface within a given Area: a measure of surface within a given set of boundaries; set of boundaries;

Formula: Length x Width (L x W)Formula: Length x Width (L x W) Unit: meters squared (mUnit: meters squared (m22)) Instrument: Ruler or Meter StickInstrument: Ruler or Meter Stick

VolumeVolume

Volume of a SolidVolume of a Solid Formula: (L x W x H)Formula: (L x W x H) Unit: meters or centimeters squaredUnit: meters or centimeters squared Instrument: Ruler or Meter StickInstrument: Ruler or Meter Stick

SpeedSpeed

SpeedSpeed Formula: Distance divided by Time (d/t)Formula: Distance divided by Time (d/t) Unit: Meters per SecondUnit: Meters per Second Instrument: Ruler or Meter Stick and Instrument: Ruler or Meter Stick and

StopwatchStopwatch

Scientific NotationScientific Notation

Used to express a number as a multiplier Used to express a number as a multiplier and power of tenand power of ten Digit term - must be between 1 and 9Digit term - must be between 1 and 9 Power term – 10 raised to a whole numberPower term – 10 raised to a whole number

Ex. 100 or 1x10Ex. 100 or 1x1022; 0.039 or 3.9x10; 0.039 or 3.9x10-2-2 You try: 12500000 You try: 12500000 You try: 2.87x10You try: 2.87x1066

Metric ConversionsMetric Conversions

Converting from one prefix to another or Converting from one prefix to another or from a base unit to a prefixfrom a base unit to a prefix

Example:Example: How many centimeters in a meter?How many centimeters in a meter? How many centimeters in a kilometer?How many centimeters in a kilometer?

Unit ConverterUnit Converter

ExampleExample

To convert 1000 milligrams to grams, you To convert 1000 milligrams to grams, you are moving which way on the stairs?are moving which way on the stairs?

UPUP If you are up you must…If you are up you must… Move the decimal LEFTMove the decimal LEFT How many places will you move?How many places will you move? 33 AnswerAnswer

AnswerAnswer

Since you are moving Since you are moving threethree steps steps upup,, then you will then you will move leftmove left three times three times 1000 is what you start with1000 is what you start with When the decimal is moved left three times: When the decimal is moved left three times:

1g1g

3 Questions to Ask3 Questions to Ask

Which way are you moving on the steps?Which way are you moving on the steps?

Are you moving up or down?Are you moving up or down?

How many steps?How many steps?

ExamplesExamples

Work Quietly on these ProblemsWork Quietly on these Problems How many grams are in 5 kilograms?How many grams are in 5 kilograms?

How many kilometers are in 25.0 metersHow many kilometers are in 25.0 meters

How may centimeters are in 45.0 How may centimeters are in 45.0 hectometers? hectometers? Write in regular notation and scientific Write in regular notation and scientific

notationnotation