Which do you think would have the greater volume and mass? Why?

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Which do you think would have the greater volume and mass? Why?

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Presentation transcript:

Which do you think would have the greater volume and mass? Why? 1 kg of feathers 1 kg of rock www.makemegenius.com Free Science Videos for Kids

www.makemegenius.com Free Science Videos for Kids DENSITY 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. Tight Loose www.makemegenius.com Free Science Videos for Kids

www.makemegenius.com Free Science Videos for Kids To find the Density 1- Find the mass of the object 2- Find the volume of the object 3- Divide Density = Mass Volume www.makemegenius.com Free Science Videos for Kids

Units & Formula for Density Unit : g/cm3 or g/ml If M = mass V= volume D = density Formula: M = D x V V = M / D D = M / V www.makemegenius.com Free Science Videos for Kids

www.makemegenius.com Free Science Videos for Kids To find density: Find the mass of the object Find the volume of the object Divide : Density = Mass - Volume Ex. If the mass of an object is 35 grams and it takes up 7 cm3 of space, calculate the density. Set up your density problems like this: Given: Mass = 35 grams Unknown: Density (g/ cm3) Volume = 7 cm3 Formula: D = M / V Solution: D = 35g/7 cm3 D = 5 g/cm3 www.makemegenius.com Free Science Videos for Kids

Proof that water and ice have different densities www.makemegenius.com Free Science Videos for Kids That is why Ice floats above the water…..as molecules in ice are far apart than water .Water expands when frozen into ice

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