Includes 2 parts: Number (ex. 1, 2, 3, 4) Unit (ex. cm, mg, kL) Measurement Includes 2 parts: Number (ex. 1, 2, 3, 4) Unit (ex. cm, mg, kL) Ex. 8 cm, 22 mg, 14.35 kL

Prefixes: come before a word Centi- centimeter (cm) 1/100 Century (100 years) Milli- milligram (mg) 1/1000 Millennium (1000 years) Kilo- kiloliter (kL) x 1000 1000x larger

The Metric System

Length Meter (m): basic unit for length Meter Stick: tool used to measure length

Meter Stick

Mass amount of matter (stuff) in an object Kilogram (kg) – basic unit of mass Balance - tool used to measure mass

Volume: amount of space an object takes up Liter (L) – basic unit of volume Graduated cylinder – tool used to measure liquid volume

Meniscus - bottom curve of water line (in a graduated cylinder) Cubic centimeter - cm3 = mL (length x width x height)

Temperature Celsius – metric measurement for temperature Thermometer – tool used to measure temperature

Examples - Boiling Temp. 100 oC - Freezing Temp. 0 oC - Body Temp. 37 oC - Room Temp. 26 oC

Conversion Factor a fraction that always equals “1” 1 m = 1000 mm Length 1 m = 1000 mm 1 m = 100 cm 1000 m = 1 Km 1 cm = 10 mm

Measuring Length How many millimeters are in 1 centimeter? 1 centimeter = 10 millimeters How many millimeters are in 1 centimeter? What is the length of the line in centimeters? _______cm What is the length of the line in millimeters? _______mm What is the length of the line to the nearest centimeter? ________cm HINT: Round to the nearest centimeter – no decimals. Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg

Conversion Factor Volume 1 L = 1000 mL 1 L = 100 cL 1000 L = 1 KL 1 cL = 10 mL

Conversion Factor Mass 1 g = 1000 mg 1 g = 100 cg 1000 g = 1 Kg 1 cg = 10 mg

Measurement/Metric System What are 4 types of measurement? What are some tools used for measurement? 1. Length 2. Mass 3. Volume 4. Temperature What are the 2 parts of a measurement? - Number and Unit 1. Meter Stick 2. Balance 3. Grad. Cylinder 4. Thermometer Identify 3 prefixes. * Centi- * Milli- * Kilo-

a skill of converting one unit to another Dimensional Analysis a skill of converting one unit to another The length of a student’s pencil is 5.4 cm. What is this measurement in mm?

Given: 5.4 cm Solve: How many mm? Conversion Factor: Work:

The longest loaf of bread on record was 1256 feet, 2 inches long The longest loaf of bread on record was 1256 feet, 2 inches long. If this bread had been cut into ½ (0.5) inch slices, how many slices of bread would there have been?

There are 115 calories in 4 ounces of baked potato There are 115 calories in 4 ounces of baked potato. How many pounds of baked potatoes would a person have to eat in order to take in 2990 calories?

At sea level, water boils at 212 degrees Fahrenheit. At the top of Mt At sea level, water boils at 212 degrees Fahrenheit. At the top of Mt. Everest, 29002 feet, water boils at 159.8 degrees F. How many degrees does the boiling point drop for every mile up from sea level to the top of Mt. Everest: (hint: change feet to miles. Find the difference of temperatures).