u/Classic_Arrival_6215

Hello! I’m not sure if this is the right place to post this but I desperately need help. I’m doing a science fair project for my school (10th grade) and I can’t think of anything to do. I want to involve a solar system model that spins on its own with a motor. But, I don’t know what I would physically experiment. I would like to have the solar system as just a model but maybe have an individual planet experiment off to the side. So, whats an experiment I could do about an individual planet(s), but it has to involve its position from the sun or its orbit in the solar system. I have to physically do an experiment in front of my teachers. Sorry if this is worded bad I tried!