let’s measure! measurement. what are some things you measure? height weight distance speed
TRANSCRIPT
Let’s Measure!
Measurement
What are some things you measure?
height
weight
distance
speed
English vs. MetricIn the U.S. we use the _________ system for measurement
All but 3 countries in the world use the INTERNATIONAL SYSTEM OF UNITS, or ___.
__________,__________ &__________
ENGLISH
SI U.S.A. BURMA LIBERIA
What we measure…
___________
___________
_______________
LENGTH VOLUME WEIGHT/ MASS
English System
Length- ___________________________
Length is measured in…
_________, _________, ________
Amount of space between two points
inches feet miles
English system
Volume- __________________________
Volume is measured in…
_________, _________, ________
Amount of space an object takes up
ounces cups gallons
English System
Weight- ___________________________
Weight is measured in…
_________, _________, ________
Gravity’s effect on an object’s mass
ounces pounds
tons
English relationships Length
1 foot = ___ inches1 mile = _______ feetVolume1 cup = __ ounces1 gallon = ___ cupsWeight1 pound = ___ ounces1 ton = _______ pounds
12 5,280
8 16
2,000 16
Why use metric? It’s easier!SI, or the _________ system, is much easier because it is based on a system of ______
Metric system uses ______ units… LENGTH _________, mVOLUME ________, LMASS ________, g
METRIC
TENS BASE METER
LITER GRAM
WEIGHT vs. MASSRemember…
_____- is the amount of MATTER an object has
_______- is ___________ effect on an objects mass
______ stays the same everywhere (Earth, moon, Mars)
WEIGHT changes… if you weigh 180lbs on Earth you would only weigh 30lbs on the moon
Mass Weight
gravity’s
MASS
Metric PrefixesPrefixes for _______ lengths, volumes & masses…
_________________________________
Prefixes for _______ lengths, volumes & masses…
_________________________________
LARGE
kilo- (k) hecto- (h) Deca- (D)
SMALL
deci- (d) centi- (c)milli- (m)
Prefix + Base UnitLENGTH
km= kilometer
hm= hectometer
Dm= Decameter
m= meterdm= decimeter
cm= centimeter
mm= millimeter
Prefix + Base UnitVOLUME
kL= kiloliterhL= hectoliterDL= DecaliterL= literdL= decilitercL= centilitermL= milliliter
Prefix + Base UnitMASS
kg= kilogramhg= hectogramDg= Decagramg= gramdg= decigramcg= centigrammg= milligram
LENGTHBase unit- ___________
English
Metric
METER
LengthWhen making measurements in science be sure to use the metric side of the ruler!
Looking at the ruler in front of youdetermine which side is the metric side
If the ruler doesn’t tell you which side is inches and which is centimeters…
The millimeter lines are always much closer together!
Ruler talkThe _________ lines on the ruler represent the ___________, the _______ lines represent __________.
longer centimet
ers shorter
millimeters
Ruler talkHow many millimeters are there in 1 centimeter? _____
What is the value of each mm? ______
How long is the line below?
_______
10
3.4 cm
0.1 cm
Let’s PracticeUse your ruler to complete the measuring worksheet.
Be sure to raise your hand if you need some help!
Tonight’s Homework
1. Complete the prefix and base unit worksheet (don’t forget to use your notes )
2. Study your notes for a quiz next class!
VOLUME
Remember…Volume is the amount of _______ an object takes up
The BASE UNIT is the __________
space
liter, L
What do you measure volume with?
________________
________________
__________________
BEAKER
Erlenmeyer flask Graduated cylinder
BEAKERSBeakers come in all _________There are teeny tiny ones and very large ones
sizes
Erlenmeyer flaskThe ________ helps prevent liquids from ___________ out of the flask
shapespilling
Graduated cylinderWhen using a graduated cylinder you always want to read from the __________ of the __________ line called the ________________
bottomcurvedmeniscus
MeniscusThe volume in this graduated cylinder is ________
43 mL
MASS
Remember…Mass is the amount of __________ an object has
The BASE UNIT is the __________
matter
GRAM
What do we use to measure mass?
________________
________________
__________________Electronic balance
Four beam balance
Triple beam balance
BalancesTriple beam balances have ________ riders
three
BalancesFour beam balances have _______ riders
four
BalancesElectronic balances plug in to the wall and __________, then they are ready to go!
calibrate
Don’t forget!All measurements contain a _________ and a ________
You don’t want to leave any numbers ___________
number unit
NAKED!!!