Because the children have been studying wave motion and other fun physics phenomena (see previous blog post), they enjoyed the following videos–perhaps you will too.
In this, watch as the slinky suspends in mid air for a time after the top part drops!
In the follow-up video below, we see what happens if a tennis ball is attached to the slinky:
And below is a super-sized slinky (I want one) dropped from a building. Watch all the way to the end, as the professor experiments with a horizontal slinky on a flat surface, demonstrating what happens when gravity is removed from the equation:
Finally, this has nothing to do with slinkies, but the girls enjoyed it as further “wave motion” intrigue (For more information about the science of these pendulums, click here):