1. Contributed by: Engineering K-Ph.D. Program, Pratt School of Engineering, Duke University

2. density, displacement, buoyancy, x-y scatter graph

6. Students will be able to define density as the amount of mass per volume a material contains. Students will be able to calculate the densities of objects when given their masses and volumes.

7. Students will be able to compare the densities of several common materials. Students will be able to explain that materials that are denser than water ordinarily sink, while those less dense than water will float.

8. Look at these three cubes Pass them around What is different about the three? How would you calculate density?

9. Density = Mass/Volume Specifically Mass should be in grams and volume in either mL or cm 3 mL = cm 3

10. Density is a measure of how much stuff (matter) there is. NOT how big something is OR how heavy. A room full of feathers is heavier than a bucket full of fishing weights.

11. Organize the following from most dense to least dense. Feathers Red Brick Aluminum Styrofoam Butter

12. In groups of 3 determine the density of the block I give you. Materials Ruler Electronic Scale Density block

13. When your group has calculated the density write a description of the material and also the density on the board with the greatest density on top and the least dense object on the bottom.

14. Toy Car Rubber stopper Golf Tee Metal Weight Golf Ball C Clamp Glass Marble

16. What would the density be of the following. Brick with a volume of 1000 mL and a mass of 3500 grams? Block of aluminum with a volume of 10 mL and a mass of 350 grams? Which is more dense?