Here’s a video that presents images of the corona virus particle. Note that the image of the object gives us information in a different way than just description in words or a description in words of how it affects us. On the other hand, the image without a narration in words would not tell us much either.
This is a professionally produced video by a media company, and your multi-modal project can look totally different. What’s important here is the idea of presenting information or telling a story using multiple modes of perception: visual, audio, color, music, etc.