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!!!