What would happen if you tilt the earth by 30 degrees or by some amount on its axis? Like at present the earth is tilted 23.4 degrees from the vertical. I mean in terms of seasons, day, whatever you can think of.

Question

jamesj · Answer

Winters would be longer, darker and colder.  Summers would be longer, brighter and hotter.  Think about what the implications of that would be.

anonymous · Answer

Both the seasons would be longer => Increase in time period?

anonymous · Answer

And Why So?

jamesj · Answer

Parts of the earth are in complete darkness and complete brightness at different times of the year right now.  Why?  Because the earth is tilted on its axis of rotation by 23.5 degrees.   The fact that the Arctic and Antartica have such extremes of weather plays a major role in the world's weather systems among other things.

If the earth were tilted 30 degrees, this times would change.

Also, every ecosystem on the earth is conditioned on the annual cycle of sunshine and weather it receives.  If that were to change, there would a massive change in life on the planet.  If nothing else, much of human crop growing would be effected.

So there are three implications
- global weather
- ecosystems everywhere
- crop growing everywhere

anonymous · Answer

James. I get that. But, in a more specific sense. I.e. if you tilt the earth further in it's direction, WHY would that happen? 
What I mean is, yes all those things you cited are the implications of the Earth differing from its natural tilt. What I want to ask is WHY those implcations. From a more physics point of view.