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Transcript of You will have 4 minutes to answer the questions on the next slide.
You will have You will have 44 minutes to answer minutes to answer the questions on the questions on
the next slidethe next slide
Bellringer 9-17-09Bellringer 9-17-09
A gram is about the mass of one _____A gram is about the mass of one _____A big bottle of Coke is about 2 ______A big bottle of Coke is about 2 ______
We measure length using a ____ We measure length using a ____ To find the mass of a car we would use To find the mass of a car we would use
____________To find the height of a doorway we would To find the height of a doorway we would
use _____use _____To find the amount of water in a fish tank To find the amount of water in a fish tank
we would use _____we would use _____
Cornell NotesCornell NotesWe will be
taking all our notes in Biology
in the Cornell notetaking
format
MetricsMetrics
Metric SystemMetric System
Scientific Scientific MeasurementsMeasurements
Metric SystemMetric System
Used by almost every country in the Used by almost every country in the world, with the notable exception of world, with the notable exception of the USA.the USA.
Especially used by scientists.Especially used by scientists. Abbreviated SI, which is French for Abbreviated SI, which is French for
System International.System International.
Metric prefixesMetric prefixes Kilo- (k)Kilo- (k)
Hecto- (h)Hecto- (h) Deca- (dk)Deca- (dk) Meter or Liter or Gram Meter or Liter or Gram
(m, l, g)(m, l, g)
Deci- (d)Deci- (d) Centi- (c)Centi- (c) Milli- (m)Milli- (m)
Up to bigger units of
measurement
Down to smaller units
of measurement
Metric prefixesMetric prefixes
KKiloilo KKinging HHectoecto HHenryenry DDecaeca DDiedied MMeter or Liter or Grameter or Liter or Gram MMondayonday DDecieci DDrinkingrinking CCenti enti CChocolatehocolate MMiliili MMilkilk
Metric PrefixesMetric Prefixes
Common prefixes are:Common prefixes are:
kilo = 1000kilo = 1000
centi = 1/100centi = 1/100thth
milli = 1/1000milli = 1/1000thth
1 meter = 100 centimeters= 1000 1 meter = 100 centimeters= 1000 millimetersmillimeters
No Naked NumbersNo Naked Numbers
MeterMeter Used to measure Used to measure
lengthlength (distance (distance between two between two points.)points.)
We We use meter use meter stickssticks to to findfind the the lengthlength of of objects.objects.
GramGram
Used to measure massUsed to measure mass (the amount (the amount of matter that makes up an object)of matter that makes up an object)
A golf ball and a ping pong ball are A golf ball and a ping pong ball are the same size, but the golf ball has the same size, but the golf ball has a lot more matter in it. So the golf a lot more matter in it. So the golf ball will have more mass.ball will have more mass.
A A largelarge paper clippaper clip has a mass of has a mass of about about one gram.one gram.
GramGram We will use a We will use a triple beam balancetriple beam balance
scale or a scale or a electronic scaleelectronic scale to measure to measure mass.mass.
LiterLiter Used to measure Used to measure
volumevolume _ the _ the amount of space amount of space contained in an contained in an object. (object. (liquid liquid and gasand gas))
We We measuremeasure volume volume with awith a graduated graduated cylindercylinder..
Other measurementsOther measurements
TemperatureTemperature is is measured by a measured by a thermometer in degrees Celsius (thermometer in degrees Celsius (oo C) C)
Time – is measured by seconds, Time – is measured by seconds, hours, days, centuries, etc.hours, days, centuries, etc.
Graduated CylindersGraduated Cylinders
Liquids form Liquids form curved, upper curved, upper surfaces when surfaces when poured into poured into graduated cylindersgraduated cylinders
To correctly read To correctly read the volume, read the volume, read the bottom of the the bottom of the curve called thecurve called the meniscusmeniscus
Laboratory EquipmentLaboratory Equipment
Test TubeTest Tube
Erlenmeyer Erlenmeyer FlaskFlask
Graduated CylinderGraduated Cylinder
BeakerBeaker
Electronic scaleElectronic scale
Meter StickMeter Stick
ThermometerThermometer
Safety glassesSafety glasses
GlovesGloves