Playlist: ESA - Density
(Video Homework -- 12 Secret Codes )

6:59
Density #1: Basic Concepts
-- by Mr. Clauset
(1) How density is a measure of its mass divided by its volume.
(2) Determining density by measuring volume using a ruler or by water displacement

12:07
Density #2: Word Problems
-- by Mr. Clauset
(1) Using the density formula (D=m/v)
(2) Using the volume formula (V=l*m*h)
(3) Using the idea of density to solve a puzzle

13:39
Density #3: Buoyancy & Fluids
-- by Mr. Clauset
Discussion of buoyancy in liquids and gases. Objects displace water as they sink or float. Water "buoys up" objects.
 

13:07
Density #4: Properties & Liquids
-- by Mr. Clauset
Density is mass / volume. It is not color or volume or mass alone. Some objects that will float in water will sink in oil.

3:04
Density #5: Suspension
-- by Mr. Clauset
Objects that are suspended in a liquid have the same density as the liquid. Suspension is another term for "neutral buoyancy."