the Earth's axis always wobbles but it does so seasonally and when it does it changes seasons in certian locations. when the axis wobbles, whatever location you are in will either get tilted towards the Sun or get tilted away from the Sun, which changes the season with the help of the revolution of the Earth around the Sun
Due to the earths precession (How the earth 'wobbles' on its axis) the pole star changes over time. Though this takes many, many years
Earth's axis wobbles.
The Earth spins like a top around its own axis. The Earth orbits the Sun. The Sun has its own proper motion through the Milky Way galaxy, and orbits the center of the galaxy every 220 million years or so. The Milky Way galaxy itself is moving, but because we don't have any fixed point of reference in the universe, we don't know in what direction.
I believe that is when the rotation of the planet moves(wobbles) its North-South Axis. Normally a planet will have this axis point in one direction.
The tilt of the Earth plus the rotational speed of 1000Mph cases a wobble effect. So the Earth not only orbits on is axis it wobbles on it. See below http://www.soes.soton.ac.uk/staff/ejr/DarkMed/F7wobble.jpg
Because Earths axis is tilted.
intersect
The axis
Because it 'wobbles' on its axis - and orbits the sun in an oval path (instead of a circle)
About 23.5 degrees, but it wobbles around this angle (between 22.1 and 24.5 degrees).
1. Tilt of earths axis 2. Earths axis remains parallel throughout its yearly orbit.
The Earth rotates on the X-Axis but also "wobbles" slightly on the Y-axis. This cause many interesting effects on our tides and day and night cycles in some parts of the world.