Science 9

Problems: Density

1. Define: density.

2. Which do you think is more dense: a) feathers or wood b) air or water c) hair or metal

3. How would you test your predictions?

4. Does an object have density: a) in space b) on the moon c) in a situation where its weight is zero?

5. a) What is the equation to calculate density?

b) Explain its terms.

6. Look around the room and make a small "object density" classification chart.

7. Find the density of the following:

a) a 3 g piece of wire with a volume of 6 cm³.

b) a 13 g piece of wire with a volume of 8 cm³.

c) a 23 g piece of wire with a volume of 5 cm³.

d) a 33 g piece of wire with a volume of 16 cm³.

e) a 43 g piece of wire with a volume of 12 cm³.

8. What is the equation to find an object's volume?

9. Now, find the volume of the following:

a) a 7 g piece of metal with a density of 9 g/cm³.

b) a 17 g piece of metal with a density of 5 g/cm³.

c) a 27 g piece of metal with a density of 8 g/cm³.

d) a 37 g piece of metal with a density of 4 g/cm³.

e) a 47 g piece of metal with a density of 6 g/cm³.

10. What is the equation to find an object's mass?

11. Finally, find the mass of the following:

a) a piece of wood with a volume of 12 cm³ and a density of 8 g/cm³.

b) a piece of wood with a volume of 22 cm³ and a density of 12 g/cm³.

c) a piece of wood with a volume of 32 cm³ and a density of 17 g/cm³.

d) a piece of wood with a volume of 42 cm³ and a density of 11 g/cm³.

e) a piece of wood with a volume of 52 cm³ and a density of 10 g/cm³.