Description: The Earth is on an axis, it is not perfectly straight facing the sun, it is tilted. So when the sun brings the solar rays to heat our planet, some of the solar rays actually bounce off, meaning that in the middle of the earth or the equator, the solar rays are stronger so the heat is hotter, that's why the country's and places where the equator goes through is hot. But in the south and north poles, its freezing cold because most of the solar rays that came bounced off.