Density

Density

• Density – measure of how much mass is contained in a given volume– Amount of ‘stuff’ inside an object compared to

how big it is

What’s more dense?

• Foam roller or steel bar?

• Baseball or hacky sack?

Calculating Density

• Density = Mass / Volume (mass divided by volume)

• Density = g/cm3 • Density of water = 1 g/cm3

• How do I determine if something sinks or floats in water?

Sink or Float?

• If the density is greater than water (>1 g/cm3), object will sink

• If the density is less than water (<1 g/cm3 ), object will float

Density of Liquids

• More dense liquids sink, less dense liquids rise

Youtube Example

Calculating Density

• Remember when you found the mass and volume of those 4 blocks earlier this week? Now calculate their density.

• Iron:• Brass:• Aluminum:• Lead: