Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

GRAND RAPIDS — What is density? Why is it important to us? In a previous experiment we learned about buoyancy with an orange sinking or floating and now we are going to learn about density with an egg ...

Stars like our Sun have around the same overall density as water. But when a star collapses in its old age, and its material gets compressed by runaway gravity, the result is a brilliant white sphere ...