Want to think about the density challenge some more? Use the following questions to help you dive deeper!

1. Did your guess about the order of the liquids and objects match what really happened? If not, why do you think it was different?

2. How do the things floating on top compare to the ones at the bottom? Are they heavier or lighter?

3. If we added these new things to the density tower, where do you think they would go?

   • Isopropyl alcohol (kind of like rubbing alcohol- density = 0.786 g/cm^3)

   • Gold (a very heavy metal!- density = 19.3 g/cm^3)

4. Why do some things, like oil, float on water while others, like a rock, sink to the bottom of a lake?

Materials:

Liquids with different densities (we used corn syrup, vegetable oil, and water)

Objects with different densities (we used wood and metal balls)

Food coloring (a different color for each liquid)

Cylinder or jar

Liquid dropper (optional)