Question

What is the correct term for changes in the elliptical shape of Earth’s orbit every 100,000 years?

Answer 1

It should be Milankovitch Cycles.

Answer 2

The correct term for changes in the elliptical shape of Earth’s orbit every 100,000 years can be described by - Milankovitch cycles

These cycle describe the effects of changes in the Earth's movements on its climate over thousands of years. There are three main factors of them: eccentricity, axial tilt, and precession.