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* SI means System International

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PrefixSymbolFactor NumberFactor Word Kilo-k1000Thousand Hecto-h100Hundred Deca-da or dk10Ten Unitm, l, or g1One Deci-d.1Tenth Centi-c.01Hundredth Milli-m.001thousandth

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Thousand Hundred Ten One Tenth Hundredth Thousandth km kg kL hm hg hL dkm dkg dkL mgLmgL dm dg dL cm cg cL mm mg mL

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STATING A MEASUREMENT I N EVERY MEASUREMENT THERE IS A N UMBER FOLLOWED BY A U NIT FROM A MEASURING DEVICE T HE NUMBER SHOULD ALSO BE AS PRECISE AS THE MEASUREMENT !

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SOME TOOLS FOR MEASUREMENT Which tool(s) would you use to measure: A. temperature B. volume C. time D. weight

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You can measure the length of ANYTHING! When we measure length we measure how long something is.

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Standard units Millimeters (mm) Centimeters (cm) Meters (m) Kilometers (km)

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MASS VS. WEIGHT M ASS : A MOUNT OF M ATTER ( GRAMS, MEASURED WITH A BALANCE) M ASS : A MOUNT OF M ATTER ( GRAMS, MEASURED WITH A BALANCE) W EIGHT : F ORCE EXERTED BY THE MASS, ONLY PRESENT WITH GRAVITY ( POUNDS, MEASURED WITH A SCALE) W EIGHT : F ORCE EXERTED BY THE MASS, ONLY PRESENT WITH GRAVITY ( POUNDS, MEASURED WITH A SCALE) Can you hear me now?

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The formula for finding the volume of a rectangle is …. L x W x H = Volume This means we take the length times the width, then multiply that by the height.

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Measuring Volume Top Image: http://www.tea.state.tx.us/student.assessment/resources/online/2006/grade8/science/images/20graphicaa.gif Bottom Image: http://morrisonlabs.com/meniscus.htm We will be using graduated cylinders to find the volume of liquids and other objects. Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water. What is the volume of water in the cylinder? _____mL What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.

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Measuring Liquid Volume Images created at http://www.standards.dfes.gov.uk/primaryframework/downloads/SWF/measuring_cylinder.swf What is the volume of water in each cylinder? Pay attention to the scales for each cylinder.

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VOLUME DISPLACEMENT A SOLID DISPLACES A MATCHING VOLUME OF WATER WHEN THE SOLID IS PLACED IN WATER. WHEN THE SOLID IS PLACED IN WATER.

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Measuring Solid Volume Click here for an online activity about volumeClick here for an online activity about volume. Choose Lessons Volume & Displacement 10 cm 9 cm 8 cm We can measure the volume of regular object using the formula length x width x height. _____ X _____ X _____ = _____ http://resources.edb.gov.hk/~s1sci/R_S1Science/sp/e n/syllabus/unit14/new/testingmain1.htm We can measure the volume of irregular object using water displacement. Amount of H 2 O with object = ______ About of H 2 O without object = ______ Difference = Volume = ______

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Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the amount of matter within a certain volume. Density

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HTTPS :// WWW. YOUTUBE. COM / WATCH ? V =Z H L68D9BP IW

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2- Find the volume of the object 1- Find the mass of the object ALWAYS REMEMBER UNITS!

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DENSITY - AN IMPORTANT AND USEFUL PHYSICAL PROPERTY Mercury 13.6 g/cm 3 21.5 g/cm 3 Aluminum 2.7 g/cm 3 Platinum

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DENSITYDENSITY D ENSITY IS AN INTENSIVE PROPERTY OF MATTER. D ENSITY IS AN INTENSIVE PROPERTY OF MATTER. DOES NOT DEPEND ON QUANTITY OF MATTER. DOES NOT DEPEND ON QUANTITY OF MATTER. TEMPERATURE TEMPERATURE C ONTRAST WITH EXTENSIVE C ONTRAST WITH EXTENSIVE DEPENDS ON QUANTITY OF MATTER. DEPENDS ON QUANTITY OF MATTER. MASS AND VOLUME. MASS AND VOLUME. Styrofoam Brick

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P ROBLEM A PIECE OF COPPER HAS A MASS OF 57.54 G. I T IS 9.36 CM LONG, 7.23 CM WIDE, AND 0.95 MM THICK. C ALCULATE DENSITY ( G / CM 3 ).

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If you have 2 or more substances, the MORE dense substance will be on bottom The LESS dense substance will be on top

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LecturePLUS Timberlake31

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Temperature is measured on two scales: Celsius and Fahrenheit. 98.6 37C F

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The lower case “C” is the symbol for the Celsius scale. C We will use Celsius

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