100% has EVERYTHING to do with with the rotation of the Earth, the distance from the Sun and the angle at which it hits. I studied astrophysics in university, if anyone has any questions about space or physics in general, feel free to ask (though i don't promise to have the answer...I would love to give it a go).

because the degree of sun light is higher than that in winter not because the position you know not everywhere is hot in winter it's warmer nearby the equator than polar for the degree of the sun light

Because hot air come .

o,no no~ my teacher just said ,the sun is farthest from the earth in summer,but the rotation of the earth is slowest in the summer。so there is more hot from sun~

Because it's summer. Summer should be hot!