Welcome to Science Buddies! I'm happy to help. First of all, I'm going to point you to our Project Guide resource, here: https://www.sciencebuddies.org/science- ... ience-fair
The "Your Question" and "Background Research" tabs will probably be the most helpful to you right now.
It's good to keep in mind how you want to explore this hypothesis. Try focusing on one specific
aspect about the moon to test - this will be your independent variable
. Then think about how this affects something that you can observe
about the tides - this will be your dependent variable