Metric Metric Measuremen Measuremen t t
Jan 02, 2016
Metric Metric MeasurementMeasurement
Types of Metric Types of Metric MeasurementMeasurement
LengthLengthMassMassVolume Volume TemperatureTemperatureDensityDensityTimeTime
LengthLengthDistance between 2 Distance between 2
pointspoints
Basic Unit: meter (m)Basic Unit: meter (m)Equipment: meter sticks, Equipment: meter sticks,
metric rulersmetric rulers
MassMassAmount of matter in an objectAmount of matter in an object
Basic Unit: gram (g)Basic Unit: gram (g)Equipment: Triple Beam BalanceEquipment: Triple Beam Balance
** Weight is different than mass! ** Weight is different than mass! Weight is mass x force of gravity. Weight is mass x force of gravity. Mass is constant. Weight can change.Mass is constant. Weight can change.
VolumeVolume
Amount of space Amount of space something takes something takes up.up.
Volume of liquidsVolume of liquidsBasic Unit: liter (l)Basic Unit: liter (l)Equipment: graduate cylinderEquipment: graduate cylinder
*Always read a graduate *Always read a graduate cylinder at eye level.cylinder at eye level.
MeniscusMeniscus- curved upper surface - curved upper surface of a column of liquid.of a column of liquid.
Volume of Liquids-cont.Volume of Liquids-cont.
Read the volume Read the volume using all certain digits using all certain digits and one uncertain and one uncertain digit. digit.
Certain digits Certain digits determined from determined from marks on cylindermarks on cylinder
Uncertain digit is Uncertain digit is estimated.estimated.
Volume: 6.62 ml
Volume: 52.7 mlVolume: 11.5 ml
Volume of SolidsVolume of SolidsBasic Unit: cmBasic Unit: cm33
Equation: Equation: V = L x W x HV = L x W x H
Example:Example:
V= V= 3cm x 3cm x 3cm3cm x 3cm x 3cm
3 cm 3 cm
3 cm
Volume of Irregular Volume of Irregular SolidsSolids
You will use a graduate You will use a graduate cylinder by water cylinder by water displacement.displacement.
TemperatureTemperatureThe measure of how hot or cold The measure of how hot or cold
something is.something is.Basic Unit: Kelvin (K)Basic Unit: Kelvin (K)Equipment: ThermometerEquipment: Thermometer
Most scientists use Most scientists use Celsius (CCelsius (C°°))
DensityDensityCloseness of particles(how Closeness of particles(how
spread apart they are)spread apart they are)Mass per unit volume of an Mass per unit volume of an
objectobjectBasic Unit: grams per cm Basic Unit: grams per cm
cubed (g/cmcubed (g/cm33))Equation: D = M / VEquation: D = M / V
TimeTimeInterval between 2 events.Interval between 2 events.
Basic Unit: Seconds (sec)Basic Unit: Seconds (sec)Equipment: Clock or Equipment: Clock or
stopwatchstopwatch
Metric ConversionsMetric ConversionsKilo1000
Hecto100
Deka10
Base Unit1
Centi0.01
Deci0.1
Milli0.001
K
H
Dk
g , l, m
d
c
m
Going down: Move the decimal point right for every step you take.
Going Up: Move the decimal point left for every step you take.
Metric ConversionsMetric ConversionsKilo
Hecto
Deka
Base Unit
Centi
Deci
Milli
K
H
Dk
g ,l, m
d
c
m
Going down: Move the decimal point right for every step you take.
Going Up: Move the decimal point left for every step you take.
Converting Metric UnitsConverting Metric Units
Practice Problem 1:Practice Problem 1:
1000 mg=______g1000 mg=______g
Practice Problem 2:Practice Problem 2:
160 cm=_______ mm160 cm=_______ mm
Practice Problem 3:Practice Problem 3:
109 g=________kg109 g=________kg
Converting Metric UnitsConverting Metric UnitsCompare using >, <, or =.Compare using >, <, or =.
Problem 4:Problem 4:
56 cm 56 cm 6 m 6 m
Problem 5:Problem 5:
7 g 7 g 698 mg 698 mg
Metric Conversion: AnswersMetric Conversion: AnswersProblem 1:Problem 1: 1 g1 g
Problem 2: 1,600 mmProblem 2: 1,600 mm
Problem 3: Problem 3: ..109 kg109 kg
Problem 4: <Problem 4: <
Problem 5: >Problem 5: >
Conversion Practice ProblemsConversion Practice Problems1)1) 27 Dkm = ______________ cm27 Dkm = ______________ cm
2)2) 2, 437 cm = ______________ km2, 437 cm = ______________ km
3)3) 14 kg = __________________cg14 kg = __________________cg
Fri. Practice ProblemsFri. Practice Problems1)1) 65 dg = ______________Dkg65 dg = ______________Dkg
2)2) 100,000 mm = _______________ km100,000 mm = _______________ km
3)3) Find the volume of this object.Find the volume of this object.(Each small block is 1 cm long)(Each small block is 1 cm long)
Practice Problems AnswersPractice Problems Answers
1)1) 0.65 Dg0.65 Dg
2) 0.1 km2) 0.1 km
3. 27 cm3. 27 cm33
Scientific NotationScientific NotationA shorter way to write A shorter way to write
very large & small very large & small numbers.numbers.
Example:Example:
300,000,000 m/s300,000,000 m/s
(speed of light)(speed of light)
= 3.0 * 10= 3.0 * 1088
CoefficientCoefficient ExponentExponent
To write a number in scientific notation:1. Put the decimal after the first digit and drop the zeroes
2. Count the number of places from the decimal to the end of the number.
Example 1:Example 1:
123,000,000,000123,000,000,000
Coefficient = 1.23Coefficient = 1.23
In 123,000,000,000 there In 123,000,000,000 there are 11 places. are 11 places.
Exponent = 11 Exponent = 11
Answer Answer ::
1.23 * 101.23 * 1011 11
Example 2:Example 2:
0.000001 s 0.000001 s
Coefficient= 1.0Coefficient= 1.0
In 0.000001 there are 6 In 0.000001 there are 6 places.places.
Exponent: 6Exponent: 6
Answer:Answer:
1.0 * 101.0 * 10-6 -6 ss
Scientific NotationScientific NotationPractice Problem 1:Practice Problem 1:
1,000 000 km1,000 000 km
= 1.0 * 10= 1.0 * 106 6 kmkm
Practice Problem 2:Practice Problem 2:
5, 600, 000, 000, 000, 000, 000, 000 m/s5, 600, 000, 000, 000, 000, 000, 000 m/s
= 5.6 *10= 5.6 *102121 m/s m/s
Practice Problem 3: Practice Problem 3:
.311 000 000 000 000 L.311 000 000 000 000 L
= 3.11 * 10= 3.11 * 101414 L L