Density

DENSITY

Density is used to describe how concentrated or
how packed an object is like the picture below:

Less Dense More Dense

DENSITY

Another way to define density is
how much matter there is in a
given volume.

Less Dense More Dense

VOLUME

Regularly shaped objects:

Volume = length x width x height.

HOW DO YOU DETERMINE THE

DENSITY OF AN OBJECT?

•First you must determine the

○ the mass of the object
○ the volume of that object

•The formula is

○ Density = mass/volume

(d=m/v)

MASS

•The amount of matter in an object

•Can use different types of scales.

Weight is different from mass. Weight is defined
as the force of gravity on an object

Volume

To find the volume of an irregularly shaped object like a rock: use the water displacement
method.

This method

involves dropping
the object into a
measured amount of water and seeing how much the water level rises.

In order to find the displacement of water you must know
how to read themeniscus correctly! Look at the bottom of the curve to accurately read the measurement.

Multiple Choice

What is the volume of the liquid in the previous slide?

• 60

• 73

• 75

• 74

Open Ended

In your own words describe how you would find the volume of the rock in the picture. Write in complete sentences with correct grammar and punctuation.

Multiple Choice

What is the volume of the liquid?

• 6.5

• 6.7

• 6.6

• 66