This Youtube user, vektorgt, has MANY science songs…“Space songs” (what is gravity, why do stars twinkle, what is friction etc) , Weather songs (what is climate, what makes lightning, highs and lows etc). Energy and Motion songs (what is energy? Electricity etc). Experiment songs (rainbows, thunder etc). Nature songs (parts of a flower. Why does a bee buzz?).
Apparently they are from a 6 LP set called Singing science, recorded decades ago. Sung by various individuals. It is all audio, no visuals. Not sure how accurate the info would be, being from so long ago!
http://www.youtube.com/watch?v=dch380o58l4&feature=mfu_in_order&list=UL
http://www.youtube.com/watch?v=YYu5ge4dc8c&feature=mfu_in_order&list=UL
http://www.youtube.com/watch?v=2kwNlcN1QYg
http://www.youtube.com/watch?v=B3UQEY1Ycnc&feature=mfu_in_order&list=UL
http://www.youtube.com/watch?v=rfvssICRorU&feature=mfu_in_order&list=UL