...Density and Graphing (10.03.10)

Today we learned about density. The density of an object is it's mass divided by it's volume.(Density=Mass/Volume) It's usually expressed in kg/L, kg/m3, or g/m3.

Example: in order to determine the density of a statue with a mass of 135kg and a volume of 65L all you have to do is divide its mass (135kg) by its volume (65L)
D=m/v
D=135kg/65L
D=2.1kg/L


We also learned about graphing.
All graphs must contain five things:
1)Labeled axis
2)Appropriate scale
3)Title
4)Data points
5)Line of best fit (usually straight)


Three things can be done when working with a graph:
1)Read the graph
2)Find the slope(rise/run)
3)Find the area under the graph