I've looked around online and found several sites, but not quite what I need. DS is five, not reading yet.

What I've seen so far either has a lot of text or are experiments.

When he asked me the question I gave him an explanation but I think it would help him to have some visuals as well.

Thanks!

note: I see that Brainpop (regular not Jr.) has a video on gravity. I will sign up for the free trial and check it out