Same volume, different stuff: the one with more mass = higher density (the metal car is denser than the superball and the water because metal has more mass than the plastic in the superball and the ...

What: Earlier this summer we learned about density. Density is the amount of mass in a given volume, or amount of space. Mass is dependent on the number of molecules in an object. Objects that are ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Q Why do some logs float and some sink? — Holden Taggart, Merrimac, Wis. A Rodney Schreiner, chemistry department, University of ...

Students learn about why different objects sink or float. Students learn about why different objects sink or float. Children will be encouraged to do an experiment at their home to test which objects ...

Learn about household objects that sink and float in this easy-to-prepare activity. Learn about household objects that sink and float in this easy-to-prepare activity.

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...