Final answer:
No, the Earth's magnetic field does not change with time. The direction of the Earth's magnetic field flips direction about once every 200,000 years, but this is on a geological timescale.
Step-by-step explanation:
No, the Earth's magnetic field does not change with time. The direction of the Earth's magnetic field does flip direction about once every 200,000 years, but this is a geological timescale. On shorter timescales, such as human lifetimes, the Earth's magnetic field remains relatively stable. This stability is important for navigation and compass use.