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 between 2 points: Space inside an object: Matter inside an object: Force of gravity: Average Kinetic energy of a material Space between events: LENGTH VOLUME MASS WEIGHT TEMPERATURE TIME

BASICS Base Units – Each quantitiy has a “base unit” which has a known, set size. QuantityBase Unit LENGTH VOLUME MASS Meter (m) Liter (l) Gram (g)

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. SMALLERLARGER Deci- = 1/10 x Centi- = 1/100 x Milli- = 1/1,000 x DECA- = 10 x HECTO- = 100 x KILO- = 1,000 x

Metric Length The metric base unit for Length is the meter. A meter stick is exactly 1 meter (1 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?

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

Length (Other Units) – Prefixes are added to the base unit for length - the meter - to make other units for other lengths. Why? Look at the table of units and their values. Smaller UnitValueLonger Unit Value (name) (fraction (name) (multiples 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 UnitValueLonger Unit Value (name)(fraction) (name) (multiples of a unit) Decimeter.1 mdecameter 10 m Centimeter.01mhectometer 100 m Millimeter.001 mkilometer 1,000 m

Reference Points in English System Unit of LengthFraction/Multiple Rough Equals (of a Base Unit) in English millimeter (mm).001 m_________________ centimeter (cm).01 m_________________ decimeter (mm).1 m_________________ meter(m) 1 m decameter (Dm) 10 m_________________ hectometer (hm) 100 m_________________ Kilometer (km) 1,000 m_________________ A reference point is something you already know, that you can use to make a comparison to something new.

Reference Points in English System Unit of LengthFraction/Multiple (of a Base Unit) millimeter (mm).001 m centimeter (cm).01 m decimeter (mm).1 m meter(m) 1 m decameter (Dm) 10 m Hectometer (hm) 100 m Kilometer (km) 1,000 m Rough Equals In English width of a pencil tip pinkie width palm width floor to doorknob length of a classroom length of football field about 1/2 mile/or 10 football fields