MEASUREMENTMEASUREMENT

MeasureMeasure We measure in order to 1.) DESCRIBEWe measure in order to 1.) DESCRIBE

2.) COMPARE2.) COMPARE

We measure: (1.) Length (2.) Mass (3.) VolumeWe measure: (1.) Length (2.) Mass (3.) Volume In Science we measure using the In Science we measure using the METRIC SYSTEM.METRIC SYSTEM. It is based on the number 10.It is based on the number 10.

LENGTH – The Basic Unit is LENGTH – The Basic Unit is METERSMETERSMASS – The Basic Unit is MASS – The Basic Unit is GRAMSGRAMSVOLUME – The Basic Unit is VOLUME – The Basic Unit is LITERSLITERS

To change the Basic Unit we add a prefix to the base To change the Basic Unit we add a prefix to the base word.word.

Kilo = 1000 Deci = 1/10 Centi = 1/100 Milli = 1/1000Kilo = 1000 Deci = 1/10 Centi = 1/100 Milli = 1/1000

Example: Kilometer 1,000 metersExample: Kilometer 1,000 meters

ONE METER = 10 decimetersONE METER = 10 decimeters 100 centimeters100 centimeters 1000 millimeters1000 millimeters

VOLUMEVOLUME

Volume is how much space something takes up.Volume is how much space something takes up.

The unit volume is measured in The unit volume is measured in LITERSLITERS (L) (L)

or or CUBIC CENTIMETERSCUBIC CENTIMETERS (cm3) (cm3)

There are two ways to find volumeThere are two ways to find volume

Regular ObjectsRegular Objects

1. To measure a regular object1. To measure a regular object

(regular – it can be measured with a ruler)(regular – it can be measured with a ruler)

LENGTH x WIDTH x HEIGHTLENGTH x WIDTH x HEIGHT

IRREGULAR OBJECTSIRREGULAR OBJECTS

2. To measure an irregular shaped object2. To measure an irregular shaped object

(Irregular – it can not be measured with a ruler)(Irregular – it can not be measured with a ruler)

Use the Use the WATER DISPLACEMENT METHODWATER DISPLACEMENT METHOD The instrument used to measure the volume is aThe instrument used to measure the volume is a

Graduated CylinderGraduated Cylinder

The The MeniscusMeniscus is the curved (concave) line in the is the curved (concave) line in the graduated cylinder at the top of liquid.graduated cylinder at the top of liquid.

Meniscus ReadingMeniscus Reading