-- OR – Learning how to measure

“CORRECTLY”

Parts of Measurement

Every measurement has two parts:

a number

a UNIT

** Without a unit – your answer is _________!!!!!!!NAKED You have naked

numbers??? Oh, the horror!

Systems of MeasurementWe use: the _________ SystemEnglish

Length: _______, ______ and _______inches feet milesVolume: _______ and ________cups gallonsWeight: ________ and ________ pounds ounces

Scientific Standard: the ________ System

MetricLength: _______ (___________ & ___________ )meters centimeters millimeters

Volume: _______ (____________)liters millilitersMass: _______ (___________ & ___________)grams milligrams kilograms

Units of Length

Basic unit is the _______meterOur rulers have TWO sides – one is ENGLISH and one is METRIC!

ALWAYS use the METRIC side!!!!

Length Abbreviations

•Meter = m•Kilometer = km•Centimeter = cm•Millimeter = mm

Units of Volume

Measured using a ________________

                       The liquid will look “curved” in the cylinder – this is called a _________.

Read the level of the liquid from the _________ of the meniscus!

Basic unit is the _______

meniscus

graduated cylinder

BOTTOM

LITER (L)

Volume Abbreviations

•Liter = L•Milliliter = ml

Units of Mass

Measured using a _______ or _________

Larger masses are measured in __________, smaller masses in ___________

Basic unit is the _______GRAM (G)

scale balance

kilograms

milligrams

Mass Abbreviations

•Milligram = mg•Gram = g•Kilogram = kg•Metric ton = t

Metric Conversions

The Metric system is based on _____10’s

(This makes it LOTS easier!)

To convert from one metric unit to another, either _______ or ______ by 10.

multiply divide

Or – move the decimal place to the ______ or the ______ the correct number of places.right left

Metric Conversions

Here’s a handy chart to help you with your metric conversions:

kilo- hecto-

Deca-

mlg

deci- centi-

milli-

Basic Unit

Metric ConversionsHow to use the chart:1. Find your starting unit2. Find your ending unit3. Move your decimal point the same number of ‘hops’ in the same direction4. Change your units

Example:Convert 5 milligrams to grams

kilo-(k)

hecto-

(h)

Deca-

(D)

mlg

deci-(d)

centi-

(c)

milli-(m)

Start hereEnd here

We take 3 ‘hops’ to the left, so we move the decimal point 3 places to the left.

5 milligrams

Example:

0 ..0. .

5 milligrams becomes __________0.005 grams

Example 2:Convert 0.8 L to deciliters.

kilo- hecto-

Deca-

mlg

deci- centi-

milli-

Start here End here

We take 1 ‘hop’ to the right, so we move the decimal point 1 place to the right.

0.8 L

Example 2:

.

0.8 liters becomes __________8 dL

Remember!1. If the number doesn’t have a decimal point to start with – it’s _____ the number!

after (56 ml is really 56.0 ml)

2. If the decimal point is at the beginning of the number, remember to put a _____ in ______of the decimal point!

zero front

( .345 cm should be written as 0.345 cm)

3. All numbers need ______! (We will have no _______ numbers in Science!!)

unitsnaked