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Metric System - Revisited. Measuring – 3 things we measure. Length. Mass. Volume. Two Methods. English. Metric. What you are used to. Inches, feet, & miles. Length. Pounds & Ounces. English. Mass. Volume. Quarts, pints, & gallons.

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## Metric System - Revisited

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**Measuring – 3 things we measure**Length Mass Volume**Two Methods**English Metric**What you are used to.**Inches, feet, & miles Length Pounds & Ounces English Mass Volume Quarts, pints, & gallons**What scientists use…and the rest of the world except**Liberia and Burma. meters Length Mass grams Metric Volume liters**Now forget the left side of the bubble map… This is what**you are to use from now on Metric System Length Mass Volume Meters (m) Grams (g) Liters (L)**These are the Suffixes….**Metric System Length Mass Volume Meters (m) Grams (g) Liters (L)**Suffixes (root word) cont…**• The word prehistoric – “historic” is the suffix • It always comes after the prefix. • Same with multivitamin – “vitamin” is the suffix**Prefixes**• They come before the suffix. • Prefixes by themselves don’t mean anything. • Example, the prefix “Un” means nothing • Added to unhappy means not happy.**Metric Prefixes**• Kilo (k) – largest • Hecto (h) • Deca (da) • Deci (d) • Centi (c) • Milli (m) – smallest • They will never be by themselves, they have to be written with a suffix.**Prefixes + Suffixes for Mass (grams)**• Prefix + Suffix = Term • Kilo (k) + gram (g)= Kilogram (kg) • Hecto (h) + gram(g) = Hectogram (hg) • Deca (da) + gram(g) = Decagram (dag) • Deci (d) + gram(g) = Decigram (dg) • Centi (c) + gram(g)= Centigram (cg) • Milli (m) + gram(g)= milligram (mg) • These terms only measure mass.**Prefixes + Suffixes for Volume(Liters)**• Prefix + Suffix = Term • Kilo (k) + Liter (L) = Kiloliter (kL) • Hecto (h) + Liter(L) = Hectoliter (hL) • Deca (da) + Liter (L) = Decaliter (daL) • Deci (d) + Liter (L) = Deciliter (dL) • Centi (c) + Liter (L) = Centiliter (cL) • Milli (m) + Liter (L) = milliliter (mL) • These terms only measure volume.**Prefixes + Suffixes for length(meters)**• Prefix + Suffix = Term • Kilo (k) + meter(m) = Kilometer (km) • Hecto (h) + meter(m) = Hectometer (hm) • Deca (da) + meter (m) = Decameter (dam) • Deci (d) + meter (m) = Decimeter (dm) • Centi (c) + meter (m) = Centimeter (cm) • Milli (m) + meter (m) = millimeter (mm) • These terms only measure meters.**Why do we have specific prefixes for each type of**measurement… Length A big measurement Km hm/ dam dm/ cm A small one mm**Same scenario works for volume and mass**• Volume – what units (prefix + suffix) would you use to measure the volume of this?_______ • Mass - what units (prefix + suffix) would you use to measure the mass of this?_________**How to measure volume**• You measure the meniscus • Meniscus is the bottom of the dip of water.**Determining what each line may represent on a measuring**tool. • Step 1 – find any two numbers… example 50 and 40 • Step 2 – subtract the two… 50 – 40 = 10 • Step 3 – count the lines in between them… start at the line above the bottom number, and stop at the line that is the top number. Example… from 40 to 50 I count 10 lines. • Step 4 – divide the answer from step 2 by the answer from step 3…. 10 divided by 10 = 1 • Your answer from step four tells you that each line equals 1. • This example the meniscus would read 43mL**How to measure length**10mm = 1cm 10cm = 1dm 10dm = 1m 10m = 1dam 10dam = 1hm 10hm = 1km 1cm 1mm**How to measure mass**• Always measure in grams • As shown the balance is 373.3g • 300 + 70 + 3.3 = 373.3g**Celsius-**standard form of temperature measurement Abbreviation C (Capitol) Human body is 98.6 F, and that is 37 C Metrics - Temperature**To remember**• Kids • Have • Damaged • 3 • Different • Colorful • Millipedes**Great… How do I do conversions?Example #1: 0.250kg**mg The decimal is moving**How do I do conversions?....contExample #1: 12mL**LNote: If you have a whole number, the decimal is always at the end of the very right number. Example 12.0 The Decimal is moving

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