Processes of Science:- Metric Measurement

Volume

Temp

Length

Mass

Metric System Basics

QUANTITIES• There are QUANTITIES that can be measured– WHAT CAN YOU MEASURE?• ________ (distance) • ________ (space inside)• ________ (matter inside)• _________ (force of gravity)• ___________ (kinetic energy of a material)• _______ (space between events)

BASICS

• Base Units– Each quantitiy has a “base unit” which has a

known, set size.

Quantity Base UnitVolume Liter (l)Mass Gram (g)Length Meter (m)

Metric System BASICS

• POWERS OF 10 (“x10” or “/10”)

– ALL units in the metric system divide evenly in to 10 equal parts!

Ex: – 1 centimeter = 10 millimeters (mm)– 1 decimeter = 10 centimeter (cm)– 1 meter = 10 decimeters (dm)

– It’s EASY to change (convert) from one unit to another, because you just multiply (or divide) by the correct factor of 10 – bigger or smaller.

• Ex: 10 millimeters = ? centimeters?

– 10 mm X 1 cm = 10mm X 1 cm = ? cm 10 mm 10 mm

Basics

• PREFIXES– Prefixes are added to base units • to make SMALLER and LARGER size units of

measurement • for measuring SMALLER and LARGER amounts.

SMALLER LARGER Deci- = 1/10 x Deca- = 10xCenti- = 1/100 x Hecto- = 100xMilli- = 1/1,000 x Kilo- = 1,000x

Metric Length• The metric base unit unit for Length is the

meter. • A meter stick is exactly 1 meter (m) long

• It has 10 decimeters (dm), • 100 centimeters (cm), • and 1,000 millimeters (mm).

• 1 dm = ? cm = ? mm

Here’s a small section of a meter stick. About how long is it in dm’s, cm’s and mm’s?

Length

– Add each of the prefixes to the base unit for length.– Then write them and their values.

Smaller Unit Value Longer Unit Value (name) (fraction (name) (multiples

of a unit) of a unit)

deci meter _____ deca meter _____centi meter _____ hecto meter _____milli meter _____ kilo meter _____

Length

• Add each of the prefixes to the base unit for length, then write them and their values:

Smaller Unit Value Longer Unit Value (name) (fraction) (name) (multiples

of a unit) of a unit)

decimeter .1 m decameter 10 mcentimeter .01m hectometer 100 mmillimeter .001 m kilometer 1,000 m

Reference Points in English System

Unit of Length Fraction/Multiple Rough Equals (of a Base Unit) in English

millimeter (mm) .001 m _________________centimeter (cm) .01 m _________________decimeter (mm) .1 m _________________meter (m) 1 mdecameter (Dm) 10 m _________________hectometer (hm) 100 m _________________Kilometer (km) 1,000 m _________________

Reference Points in English System

Unit of Length Fraction/Multiple Rough Equals (of a Base Unit) in English

millimeter (mm) .001 m width of pencil tipcentimeter (cm) .01 m pinkie widthdecimeter (mm) .1 m palm widthmeter (m) 1 m floor to doorknobdecameter (Dm) 10 m length of classroomHectometer (hm) 100 m length football fieldKilometer (km) 1,000 m about 1 mile (6/10)