1. Volume and Density

2. Volume (Capacity) Volume is the amount of space taken up by an object
Volume can also mean how much something holds
Volume can be measured in many different units
Volume can be calculated by using water displacement!

3. Units for Measuring Volume
Metric Standard
Liter (l)
Milliliter (ml)
Cubic Centimeter (cc or cm3)
Remember: 1 ml = 1 cc
Other Standards
Gallon (gal.)
Quart (qt.)
Pint (pt.)
Cup (c.)
Tablespoon (tbsp.)
Teaspoon (tsp.)
Fluid Ounce (fl. oz.)
Cubic Inches (in3 or cu in.)
Cubic Feet (ft3 or cu. ft.)

4. Using Water Displacement to Calculate Volume
Measure the level of the water in a container.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

5. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

6. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

7. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

8. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

9. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

10. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

11. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

12. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

13. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

14. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

15. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

16. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

17. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

18. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

19. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

20. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

21. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

22. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

23. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

24. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

25. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

26. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

27. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

28. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

29. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

30. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

31. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

32. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

33. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

34. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

35. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

36. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

37. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

38. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

39. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
Measure the level after the ball has displaced some of the water.
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

40. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
Measure the level after the ball has displaced some of the water ml
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

41. Using Water Displacement to Calculate Volume
Measure the level of the water in a container. 30 ml
Insert an object in the water. We’ll use a metal ball.
Measure the level after the ball has displaced some of the water ml
Finally, find the difference between the water level before displacement and after displacement.
39 minus 30 = 9 ml
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

42. Using Water Displacement to Calculate Volume
The metal ball has a volume of 9 ml!
70 ml
60 ml
50 ml
40 ml
30 ml
20 ml
10 ml

43. Density Density refers to “how crowded” something is!
When we talk about density, we usually referring to “how crowded” the molecules are.
Density can be measured in grams per milliliter ( g/ml )
Solids are the densest phase of matter. Gases are the least dense.

44. How to Calculate Density
Find the volume of the object. You can use water displacement for this. Let’s use the metal ball again. It’s volume was 9 ml!

45. How to Calculate Density
Find the volume of the object. You can use water displacement for this. Let’s use the metal ball again. It’s volume was 9 ml!
Now find the mass of the object. You can use a triple bean balance scale for this.

46. How to Calculate Density
Find the volume of the object. You can use water displacement for this. Let’s use the metal ball again. It’s volume was 9 ml!
Now find the mass of the object. You can use a triple bean balance scale for this Mass = 54 g
Divide the mass by the volume!
54 g ÷ 9 ml = 6 g/ml

47. More About Density . . . Pure water has a density of 1 g/ml
If any material is denser than the fluid that surrounds it, it will have negative buoyancy. It will sink!
If any material is less dense than the fluid that surrounds it, it will have positive buoyancy. It will float!

48. Which of the following items would have positive buoyancy in water?
Widget 3 g/ml
Gork 9 g/ml
Joob .5 g/ml
Winky 1.4 g/ml
Noople 1.03 g/ml
Hoosh .099 g/ml

49. Which of the following items would have positive buoyancy in water?
Widget 3 g/ml
Gork 9 g/ml
Joob .5 g/ml
Winky 1.4 g/ml
Noople 1.03 g/ml
Hoosh .099 g/ml

50. Widget 3 g/ml Gork 9 g/ml Joob .5 g/ml Winky 1.4 g/ml Noople 1.03 g/ml
Which of the following items would float in a fluid that had a density of 1.45 g/ml ?
Widget 3 g/ml
Gork 9 g/ml
Joob .5 g/ml
Winky 1.4 g/ml
Noople 1.03 g/ml
Hoosh .099 g/ml