The answer is yes - modern hard drives contain algorithms that move the heads even when the drive is idle, so they are not constantly flying over the same area of the drive.  It's called wear leveling.

Thanks.

So I did have one other question. I wouldn't get any noises if I bought a solid state drive and replaced the hard drive with it, right? Also, how was I not hearing any clicking sounds the first week or two that I was using the laptop?

Solid state drives are silent - right up to the moment they fail, which they do - and more often than conventional hard drives at this point.  It's hard to say why the sound appeared -- is the system running abnormally hot?

It is not at this point. It can be at times when I keep it on for a few hours straight. But yes, I don't really know... I had the old hard drive replaced and all after it failed, so it's odd that this one would be doing it too. As I said, I wonder if it's something in the computer causing the hard drives to go bad. And I was wrong before - it really does the clicking sound more like every two-five minutes.

It may be the automatic park is kicking in depending on the load on the system.  Drives also do internal calibration as they heat  up and cool down.

Run a full diagnostic on the drive itself.