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Measurement

Measurement

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Measurement

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  1. Measurement Let’s Measure!

  2. What are some things you measure? weight height speed distance

  3. 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

  4. What we measure… • ___________ • ___________ • _______________ LENGTH VOLUME WEIGHT/ MASS

  5. English System Length- ___________________________ Length is measured in… • _________, _________, ________ Amount of space between two points inches feet miles

  6. English system Volume- __________________________ Volume is measured in… • _________, _________, ________ Amount of space an object takes up ounces cups gallons

  7. English System Weight- ___________________________ Weight is measured in… • _________, _________, ________ Gravity’s effect on an object’s mass ounces pounds tons

  8. 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

  9. 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

  10. 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

  11. 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)

  12. Prefix + Base Unit LENGTH km= kilometer hm= hectometer Dm= Decameter m= meter dm= decimeter cm= centimeter mm= millimeter

  13. Prefix + Base Unit VOLUME kL= kiloliter hL= hectoliter DL= Decaliter L= liter dL= deciliter cL= centiliter mL= milliliter

  14. Prefix + Base Unit MASS kg= kilogram hg= hectogram Dg= Decagram g= gram dg= decigram cg= centigram mg= milligram

  15. LENGTH METER • Base unit- ___________ Metric English

  16. 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!

  17. Ruler talk longer • The _________ lines on the ruler represent the ___________, the _______ lines represent __________. centimeters shorter millimeters

  18. 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

  19. Let’s Practice • Use your ruler to complete the measuring worksheet. • Be sure to raise your hand if you need some help!

  20. 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!

  21. VOLUME Remember… • Volume is the amount of _______ an object takes up • The BASE UNIT is the __________ space liter, L

  22. What do you measure volume with? • ________________ • ________________ • __________________ BEAKER Erlenmeyer flask Graduated cylinder

  23. BEAKERS sizes • Beakers come in all _________ • There are teeny tiny ones and very large ones

  24. Erlenmeyer flask shape • The ________ helps prevent liquids from ___________ out of the flask spilling

  25. Graduated cylinder • When using a graduated cylinder you always want to read from the __________ of the __________ line called the ________________ bottom curved meniscus

  26. Meniscus • The volume in this graduated cylinder is ________ 43 mL

  27. MASS Remember… • Mass is the amount of __________ an object has • The BASE UNIT is the __________ matter GRAM

  28. What do we use to measure mass? • ________________ • ________________ • __________________ Triple beam balance Four beam balance Electronic balance

  29. Balances three • Triple beam balances have ________ riders

  30. Balances four • Four beam balances have _______ riders

  31. Balances • Electronic balances plug in to the wall and __________, then they are ready to go! calibrate

  32. Don’t forget! • All measurements contain a _________ and a ________ • You don’t want to leave any numbers ___________ number unit NAKED!!!