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What is DENSITY?? A Golf Ball is MORE DENSE than a Ping Pong Ball What does this mean?

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Presentation on theme: "What is DENSITY?? A Golf Ball is MORE DENSE than a Ping Pong Ball What does this mean?"— Presentation transcript:

1 What is DENSITY?? A Golf Ball is MORE DENSE than a Ping Pong Ball What does this mean?

2 The ______________ of like atoms or molecules The ______________ of like atoms or molecules More than just the _____________of a substance, density includes _________________ an object takes up!! More than just the _____________of a substance, density includes _________________ an object takes up!! All substances have density including liquids, solids, and gases All substances have density including liquids, solids, and gases Density is the measure of the _______________ of a material

3 DENSITY Depends on: Depends on: Mass: ______________________ Mass: ______________________ Volume: ___________________________________ Volume: ___________________________________ FORMULA: __________________ FORMULA: __________________ Mass usually expressed in ________ Volume usually expressed in _____ or liters, etc.

4 What would take up more space??? A kilogram of feathers….. or a kilogram of steel?? OR

5 Compactness

6 LIQUIDS The more dissolved solids in a solution, the __________________ (such as ocean water) The more dissolved solids in a solution, the __________________ (such as ocean water) Cold water in lakes tend to ______ (this creates a constant mixing of water, nutrients, and other substances) Cold water in lakes tend to ______ (this creates a constant mixing of water, nutrients, and other substances) Denser layers to less dense layers…..

7 What would happen???? Mercury density = 13600kg/m 3 Mercury density = 13600kg/m 3 Lead density = 11340kg/m 3 Lead density = 11340kg/m 3

8 Lead floats on liquid mercury!

9 Solids Ice vs. water…..

10 SOLIDS Ice is _____________ than water (which is why lakes and ponds have a thin layer of ice covering in winter, with water underneath) Ice is _____________ than water (which is why lakes and ponds have a thin layer of ice covering in winter, with water underneath) Various rocks, woods, metals have a characteristic density specific to that substance Various rocks, woods, metals have a characteristic density specific to that substance Wouldnt you like to have a bunch of THIS dense material?

11 Factors affecting Density ____________________ ____________________ _____________________ _____________________

12 DETERMINING DENSITY Regular Shapes – mass, then determine the volume by formula Regular Shapes – mass, then determine the volume by formula EX: cubes, cylinders, spheres, cones, etc. Irregular shapes – mass, then measure displacement of a liquid (usually water) by that irregularly shaped object Irregular shapes – mass, then measure displacement of a liquid (usually water) by that irregularly shaped object


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