Task 1: Discovering Density
Look at the two boxes found below. Each box has the same volume. If each ball has the same mass, which box would weigh more? Why?
- Have the recorder write down the groups’ answer in the Density Dilemma Activity Sheet.
- Go to http://www.ajdesigner.com/phpdensity/density_equation.php and look at the formula for density. As a group, discuss what this equation means. Have the recorder write down both the formula and what your group thinks this equation means into the Group Density Dilemma Activity Sheet.
- As well, each member should write down their own definition of density into their Individual Density Dilemma Activity Sheet.
- Look at the table found below. Which of these substances would float in water? How do you know? Have the recorder write down your answer in the Group Density Dilemma Activity Sheet.
Density of Common Substances
|
Substance |
Density (g/cm3) |
|
Wood (oak) |
0.85 |
|
Aluminum |
2.7 |
|
Silver |
10.5 |
|
Steel |
7.8 |
|
Lead |
11.3 |
|
Gold |
19.3 |
Task 2: Whole Group Discussion
As a whole class, we will confirm the formula for density and provide the meaning behind the equation. Your group presenter will state what your group has come up with and after the whole class discussions, your group will be given a few minutes to revise any explanations on your Group Density Dilemma Activity Sheet. As well, we will take a look at the Density of Common Substances table as a whole group.