You are the Super Hero of Density
Name _______________________________________________
1. Imagine a loaf of bread that is 10 inches long. If you place your palms flat on
the slices and squeeze along the length so that the loaf becomes 7 inches
long, what changes? __________________________ Explain your reasoning.
2. A bungee cord is stretched to twice its length. What changes? __________________
Explain your reasoning.
3. A candy bar is 10 cm x 2 cm x 4 cm. It has a mass of 120 g, and a density of 1.5
g/ml (1 ml = 1 cm3 ) You eat one quarter of the candy bar. What changes?
______________________________ Explain your reasoning.
4. Two shoeboxes are identical in size. One contains beans and the other
contains popcorn. What is the same and what is different?
5. Which one is heavier-a pound of feathers or a pound of lead? __________________
Which one has more volume? _____________________ More density? _______________
Explain your reasoning.
6. Which is more dense-a stack of 5 pennies or a stack of 2- pennies? ____________
Explain your reasoning.
7. Besides shape, what two things are different between a 300 gram rectangular
block of copper and a 300 gram round ball of copper? _______________________ &
________________________ Explain your reasoning.
You are the Super Hero of Density
Name _______________________________________________
Density Math Practice Problems
1. If a rectangular object has a mass of 67 g and a volume of 32 cm3 what is the
density? __________________________
2. If a cube has one side with the length 4.1 cm what is the volume of the cube?
__________________________
If the mass of the same cube is 16.2 g what is the density? __________________
3. The mass of an object is 67.1 g and while doing water displacement the water
level started at 20 mL and ended at 43 mL when the object added. What is
the density? _______________________
4. Using a ruler a student found that an object had a length of 5.2 cm, a width of
6.2 cm, and a height of 1.9 cm and then using a Triple Beam Balance he found
that the mass was 25 g. What is the density? _________________________________
5. If the volume of an object is 33 mL and the mass is 12.2 g what is the density?
________________________________
6. What is the volume of an object if I use water displacement and I started with
15 mL and after I added the object the graduated cylinder reads 17 mL?
________________________
If the mass of the object is 2.2 g what is the density? ___________________________