Earth's tilt does not stay the same because of its?

Answer 1

We're not quite sure what the question means by "earth's tilt" or "stay the same".

The axis of the earth's rotation is inclined about 67.5 degrees to the plane of

the earth's orbit, and that doesn't change. Over the course of a human lifetime,

or several human lifetimes, the pole of earth's axis remains pointed toward the

same spot in the sky, presently quite close to the star Polaris. Over a period of

26,000 years, the pole describes a circle in the sky, but the axis remain inclined

to the plane of the orbit by the same 67.5 degrees.

So we must take issue with the premise of the question, and say that the earth's

"tilt" does in fact "stay the same".

precession-apex answer

Answer 2

This looks like a "fill in the blank" question, so you should fill in the blank with whatever your textbook says.

There are internal processes in the Earth that change the tilt slightly, and there's also the precession of the equinoxes. I suspect that's the answer your textbook has, though that doesn't actually change the tilt itself, it changes the direction of the tilt (like a wobbling top).

Answer 3

axial precession, which is the gradual change in the orientation of Earth's axis over time due to gravitational forces from other celestial bodies such as the Sun and Moon. This causes Earth's tilt to shift and change approximately every 26,000 years.

Answer 4

precession