This video by Mark Rober (Check out some of Mark’s other science videos) is nicely done and could be pushed out to students as part of some online science learning. There are lots of Science & Engineering Practices and Crosscutting Concepts at work here too if you wanted to get all NGSS nerdy with it.
Mark is also livestreaming a Science Class on his YouTube channel at 1pm PST Monday, Wednesday, and Friday. His first was today. He’s also posting the videos so you don’t have to catch the livestream.