DENSITYBig Idea 2.0

Density is the amount of matter or particles in a given volume

Weight vs MassWeight is a measure of the force of gravity on

an objectMass is the amount of mass in an object

On earth weight and mass seem to be the same The moon has 1/6 of our gravity so the mass would

be the same but weight would be different

VolumeHow much space an object takes upVolume and mass determine density, Density can be measured by finding the mass

of a substance in a given volume

DemoHave you ever used the word ‘dense’?What is the difference between 25 grams of

crispy rice and 25 grams of regular riceCompare volume and massWhich is the most dense?

Water and other FluidsPredict the density of the following:

Water, corn syrup, glycerin, canola oil and rubbing alcohol

Activity: Liquid layersTake 20 ml of each liquid, 2 types of food

colouring, 5 test tubes and a funnel

Wrap upWhich fluids had the greatest density (mass

to volume ratio)How would you sketch the particles of each

fluidWhat are some practical applications for

knowing that a density of a fluid is more or less than water?

Oil- SpillsSmall oil spills happen all the time, in Canada

there are 12 spills of over 4000 L every day into our water systems !!!

Oil has a lower density and floats on waterThis can both help and hurt the environment:

Birds are greatly damaged by the oil floating Floating oil is easier to clean up than of it sinks