Need a Physics Investigatory topic

[Eutrophicati]

Homework Statement

^Not quite relevant to follow the template, unfortunately.
I need to do an investigation in Physics (not just a research paper) and I need help finding a suitable topic
Some of the good ones that have been done so far mainly involved looking at the aerodynamics of aeroplanes and the like. My current topic is looking at the various factors which cause the specific heat capacity of liquids to change (although they shouldn't) with temperature. But I really don't know if I can get results that are significant enough to investigate, so I don't want to take that risk.

Any suggestions? I'd be interested in electromagnetism and thermodynamics, mostly, I suppose.
(But please, I'm not restricting myself to these, I'm willing to look at others!)

I'm looking for suggestions within the scope of Grade 12 (IB) Physics.

Unfortunately, I AM a bit short on time, so please, if you cannot think of any potential theses on the spot, could you please at least redirect me to somewhere else where I can get a topic?

 

[Eutrophicati]

Here's another idea

I can investigate if any factors can affect the heat capacity of matter without a change of state.