How can you explain the temperature changes throughout the year?

Changes in temperature on the planet are caused by the rotation of the Earth around the Sun and the deviation of the axis of our planet relative to its orbit. Because of this tilt, during the year, the two hemispheres of the Earth, the North and the South, take turns approaching and moving away from the Sun. At a time when one of the hemispheres approaches the sun, the temperature there rises and spring and summer begin. When the hemisphere moves away from the Sun, it receives less heat from it, and there, respectively, fall and winter begin.