I ran across these little Physics related videos the other day. Each one is only about a minute long so a nice little break. They are also aimed at presenting ideas rather than answering questions so could be a good way to stimulate a discussion or a starting point for more research. Cute and accessible for many year levels. Access the videos here.
Have an explore of the site while you are there – they have some other resources online mostly related to quantum physics. I also liked this one which explains some “big ideas” in an accessible way.
Have a great weekend!