I want to be an archaeologist because of my love for history and world culture and when I tell people that they call me a nerd.
I don't see how that's nerdy at all. I think it's actually pretty admirable that you're passionate about something and already have an idea of what you want to be when you get older. Whoever is calling you a nerd is either mean or jealous. Don't let these kind of comments bring you down!
If people think that's nerdy, then so be it. I was kind of "nerdy" in high school because I always did my work and I got good grades, but I still had a lot of friends and I was kind of "popular" I guess. Being a nerd is not a bad thing. Embrace it ;)