What would happen if the earth's angle of inclination was 45 degrees instead of 23 degrees?

It would cause it to become colder.....

The change would be more complex than that. The poles would get more sunlight during various seasons, leading to greater melting at the poles with their "summer" seasons.

However, since this is not my area of expertise, I searched Google under the key words "earth inclination angle" to get these possible sources:

(Broken Link Removed)
http://en.wikipedia.org/wiki/Inclination
http://www.gi.alaska.edu/ScienceForum/ASF8/825.html
http://www.phy6.org/stargaze/Lseason.htm

You can also look up other terms for this same phenomenon indicated on these sites.

I hope this helps. Thanks for asking.

If the Earth's angle of inclination was 45 degrees instead of 23 degrees, it would have significant effects on the Earth's climate and seasons.

Firstly, the change in the angle of inclination would result in a more extreme difference between summer and winter temperatures in different parts of the world. This is because the angle of inclination determines how direct or indirect the sunlight is that reaches the Earth's surface.

With a higher angle of inclination, the polar regions would experience more sunlight during their respective summer seasons, leading to increased melting of ice and glaciers. Conversely, during their respective winter seasons, the polar regions would receive less sunlight, resulting in colder temperatures.

In the mid-latitude regions, a higher angle of inclination would lead to more pronounced seasonal variations. Summers would be hotter, while winters would be colder. These temperature extremes could have significant impacts on agriculture, ecosystems, and human activities in these regions.

It's important to note that the Earth's angle of inclination naturally varies slightly over long periods of time due to factors such as gravitational influences from other celestial bodies. However, a sudden change to 45 degrees would have significant and immediate consequences.

To learn more about the effects of changing the Earth's angle of inclination, you can refer to scientific literature, scholarly articles, or reputable websites that specialize in climate science or astronomy.