If you are traveling north, are you traveling around a longitude line or a latitude line?

Question

If you are traveling north, are you traveling around a longitude line or a latitude line?

Answer 1

Latitudes run east-west (laterally), parallel to the equator, so if you're traveling north, you will be crossing them.

Longitudinal lines run from pole to pole. When traveling due north, your longitude bearing will never change.

Answer 2

Travelling along (not 'around') longitude line

Answer 3

your travelling on a longitude line, but changing your latitude location.