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## Measurement

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**Measurement**Let’s Measure!**What are some things you measure?**weight height speed distance**English vs. Metric**ENGLISH • In the U.S. we use the _________ system for measurement • All but 3 countries in the world use the INTERNATIONAL SYSTEM OF UNITS, or ___. • __________, • __________ & • __________ SI U.S.A. BURMA LIBERIA**What we measure…**• ___________ • ___________ • _______________ LENGTH VOLUME WEIGHT/ MASS**English System**Length- ___________________________ Length is measured in… • _________, _________, ________ Amount of space between two points inches feet miles**English system**Volume- __________________________ Volume is measured in… • _________, _________, ________ Amount of space an object takes up ounces cups gallons**English System**Weight- ___________________________ Weight is measured in… • _________, _________, ________ Gravity’s effect on an object’s mass ounces pounds tons**English relationships**Length • 1 foot = ___ inches • 1 mile = _______ feet Volume • 1 cup = __ ounces • 1 gallon = ___ cups Weight • 1 pound = ___ ounces • 1 ton = _______ pounds 12 5,280 8 16 16 2,000**Why use metric? It’s easier!**METRIC • SI, or the _________ system, is much easier because it is based on a system of ______ • Metric system uses ______ units… • LENGTH _________, m • VOLUME ________, L • MASS ________, g TENS BASE METER LITER GRAM**WEIGHT vs. MASS**• Remember… • _____- is the amount of MATTER an object has • _______- is ___________ effect on an objects mass • ______ stays the same everywhere (Earth, moon, Mars) • WEIGHT changes… if you weigh 180lbs on Earth you would only weigh 30lbs on the moon Mass Weight gravity’s MASS**Metric Prefixes**• Prefixes for _______ lengths, volumes & masses… • ___________ • ___________ • ___________ • Prefixes for _______ lengths, volumes & masses… • ___________ • ___________ • ___________ LARGE SMALL kilo- (k) deci- (d) hecto- (h) centi- (c) Deca- (D) milli- (m)**Prefix + Base Unit LENGTH**km= kilometer hm= hectometer Dm= Decameter m= meter dm= decimeter cm= centimeter mm= millimeter**Prefix + Base Unit VOLUME**kL= kiloliter hL= hectoliter DL= Decaliter L= liter dL= deciliter cL= centiliter mL= milliliter**Prefix + Base Unit MASS**kg= kilogram hg= hectogram Dg= Decagram g= gram dg= decigram cg= centigram mg= milligram**LENGTH**METER • Base unit- ___________ Metric English**Length**• When making measurements in science be sure to use the metric side of the ruler! • Looking at the ruler in front of you • determine which side is the metric side If the ruler doesn’t tell you which side is inches and which is centimeters… The millimeter lines are always much closer together!**Ruler talk**longer • The _________ lines on the ruler represent the ___________, the _______ lines represent __________. centimeters shorter millimeters**Ruler talk**• How many millimeters are there in 1 centimeter? _____ • What is the value of each mm? ______ • How long is the line below? _______ 10 0.1 cm 3.4 cm**Let’s Practice**• Use your ruler to complete the measuring worksheet. • Be sure to raise your hand if you need some help!**Tonight’s Homework**• Complete the prefix and base unit worksheet (don’t forget to use your notes ) • Study your notes for a quiz next class!**VOLUME**Remember… • Volume is the amount of _______ an object takes up • The BASE UNIT is the __________ space liter, L**What do you measure volume with?**• ________________ • ________________ • __________________ BEAKER Erlenmeyer flask Graduated cylinder**BEAKERS**sizes • Beakers come in all _________ • There are teeny tiny ones and very large ones**Erlenmeyer flask**shape • The ________ helps prevent liquids from ___________ out of the flask spilling**Graduated cylinder**• When using a graduated cylinder you always want to read from the __________ of the __________ line called the ________________ bottom curved meniscus**Meniscus**• The volume in this graduated cylinder is ________ 43 mL**MASS**Remember… • Mass is the amount of __________ an object has • The BASE UNIT is the __________ matter GRAM**What do we use to measure mass?**• ________________ • ________________ • __________________ Triple beam balance Four beam balance Electronic balance**Balances**three • Triple beam balances have ________ riders**Balances**four • Four beam balances have _______ riders**Balances**• Electronic balances plug in to the wall and __________, then they are ready to go! calibrate**Don’t forget!**• All measurements contain a _________ and a ________ • You don’t want to leave any numbers ___________ number unit NAKED!!!