Name _______________________________________________ Block ______ Date ____________
Density Practice
1. Observing Density Differences a. Place the ping pong ball, cube, and rock in 3 separate containers. b. Describe what you see.
2. Calculating Density of a Regular Object (ex: cube) a. The formula is D = Mass/Volume (mass divided by volume) b. What is the formula for the volume of a regular object? ____________________ c. What is the mass of the cube? ________________ d. Use the formula above to calculate the cube’s density. Show your work below.
3. Calculating the Density of an Irregular Object (ex: ping pong ball or rock) a. The formula changes slightly: D = Mass/Volume
2
– Volume
1
(mass divided by volume 2 minus volume 2) b. What is the mass of – i. Ping pong ball _________ ii. Rock _________ c. What is the volume you started with for both objects? V
1 =
____________ d. What is the volume (V
2
) of – i. Ping pong ball + water e. What is the volume of –
______ ii. Rock + water _________ ii. Rock _________ i. Ping pong ball _________ f. What is the density of – i. Ping pong ball _________ iii. Show your work here: ii. Rock _________
4. Questions a. Define density in your own words. Use complete sentences. b. Rank the objects in order from least dense to densest. c. Infer what would happen if I increased the volume but not the mass of the glass bead. d. Which is heavier – a kilogram of feathers or a kilogram of bricks?