Here’s a nice site to help counter the stereotypical view of a scientist as a balding white bloke with glasses. Here’s what real scientists look like. Show some of these to your class.
Another good video from Veritasium to explain the phases of the moon and eclipses. Maybe stop after the people have given their explanations for the phases of the moon and ask students what they think…
(And maybe stop it yourself there too, and try and explain it, before watching the rest of the video)