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What is Volume. Volume is defined as the amount of space taken up by a three-dimensional object. . Volume often refers to liquid volume , which is defined as the amount of space taken up by a liquid, which spreads completely to fill its container. . Volume of Liquids Reading a Meniscus.
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What is Volume • Volume is defined as the amount of space taken up by a three-dimensional object.
Volume often refers to liquid volume, which is defined as the amount of space taken up by a liquid, which spreads completely to fill its container.
Used for irregular shaped objects Select a graduated cylinder large enough to put the object in Add water - at least 10 mL and record accurately Measuring Volume by Displacement
SLOWLY add the object to be measured: rubber stopper slug metal cylinder Read the new level of the water The water will rise an amount equal to the volume of the object
Do the math 1 . Original reading of volume • Final volume of water • This will equal the volume of the object • 22.5 mL - 17.4 mL = 5.1 mL • Therefore, the volume of the object by displacement is 5.1 mL
A penny is a flat cylinder – could calculate the volume by direct measurement.
Value of Error in Minting Pennies • How close the individual volumes are to each other • Calculate as follows • % error = average volume - actual volume • actual volume • % error = error in minting the pennies • The smaller the %error, the better the precision in making of the pennies. 12
Example: % error in minting pennies = average volume - actual volume actual volume % error in minting pennies = 1.2g - 1.4g 1.4g = 0.14 X 100% = 14 % So there is a 14% error in minting of these particular pennies 13
Procedure Ruler “equivalent volume” Measure level of water as each “equivalent volume” is added.