Verified answer

Paint a curved surface with heat sensitive paint and put it in a reasonable proximity to a heat source.

The tilt of the Earth on it's axis causes the sun's rays to hit the Earth differently throughout the Earth year.

When the sun is like this and the Earth is like this: O /

the Southern hemisphere gets more sunlight and heat than the Northern hemisphere. This is Winter in the North and Summer in the South.

When the Earth is on the other side of the sun, then it's tilted like this towards the sun: / O

now the Northern hemisphere has more direct sunlight and they are in Summer.

The poles never get any direct sunlight.

I'll throw you a hint.

The solar power falling on a piece of land (on Earth) gets spread out on less area or more area depending upon its angle. Same powere is spread on larger or smaller area. It is that the power density (or Intensity) is proportional to the 'Cos(angle)'. Take Noon Sun's positon at a place (all figures in degrees), The dip-angle (90 - Elevation) or angle down from zenith of Noon Sun is (90 - latitude of your place). Then between the solstices it varies by +/- 23.45. So now you have

(90 - latitude of your place +/- 23.45).

Work out the different values (use Trigonometry) and arrive at the ratio. You'll wonder at the amount of variation.

School work is given to you to teach you how to work out the question, and a person that keeps asking others for the answer will never really learn how to find the answers for them selves.

As for me, I don't do others school work, use your brain, that is what it's for.