Should I do an EPQWatch
- Maybe tie in both subjects? Have laws of physics influenced geology (Flocculation, gravity settling?) or vice versa
- History of physics / geology. (you could even ask something really specific in history, like how did physics influence impacts of the X war or smth? - Invention of weapons, what would happen if they didn't have these weapons, more or less deaths)
You may not like these ideas but just try and think of something original, they like that.