Does the earths precession cause the annual seasonal change?

Question

How does this work if the earths wobble cycles every 21,000 years?
How do we get the seasonal change?

Answer 1

What the wobble will do is reverse the seasons. If you keep careful count of the days between now and half-way through the cycle, Christmas in the Northern Hemisphere will move into summer. It's just take awhile.

Answer 2

In short, no. The tilt of Earth's axis causes the seasons. The precession of the ecliptic causes the position of the ecliptic to change in the celestial sphere, and where the north and south celestial poles are in the sky, but other than that, there are no real changes that we would observe here on Earth. The calendar year is based on the mean tropical year which is based on the position of the sun relative to the celestial equator, so the precession will not cause seasons to move into different months.

Answer 3

It does not wobble. The axis of rotation changes by a few degrees. The Earth's axis of rotation is tilted by about 23.5 degrees with respect to the perpendicular to the orbit around the Sun. If I remember correctly, this varies from about 20 degrees to 25 degrees. This variation is not the cause of the seasonal changes.

The seasonal changes are caused because the axis is titled. Its direction changes with respect to the Sun, and this causes variations in the amount of radiation that we receive from the Sun. And this variation causes the seasonal changes.

Answer 4

The earth rocks 22 1/2 degrees on it's axis every 6 months

Answer 5

Seasonal change is caused by the earth's tilt on its axis, so that the sun is in the southern hemisphere during the day (in the northern hemisphere) half the year, and in the northern hemisphere during the day the other half. When the sun is in the northern hemisphere during the daytime, it's summer in the northern hemisphere.

Answer 6

Procession causes seasons. Wobble has nothing to do with seasons, but can explain events like ice ages.