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 ...

But what does that mean? The simple answer is how heavy something is for its size. If something seems very heavy for its size (like a heavy metal object), we say it is more dense. If something seems ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi, I'm Diana. Great to be here with you today. I was wondering why is it that a golf ball and a ping ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. RUBEN: Setting up an experiment, Elliot. ELLIOT: What you doing? RUBEN: Well, I've got three glasses ...