Seasons and Revolutions
The earths tilt is always tilted towards the north star. In the northern hemisphere, during the summer, the northern hemisphere is tilted towards the sun, which is why you have more sunlight, higher temperatures, and longer days. However, when the earth is on the other leg of its revolution around the sun, the northern hemisphere is tilted away from the sun, this gives us cooler temperatures, less sunlight, and shorter days. This is called winter. However, in the southern hemisphere the tilt is the opposite, and when the northern hemisphere is in the thick of winter, the southern hemisphere is in the middle of summer.
If the sun is closer to the sun you will have much more light, and with more light comes more heat. This creates summers and winters. If the earth is faced away from the sun then you will have much less light and colder temperatures.
If the sun is closer to the sun you will have much more light, and with more light comes more heat. This creates summers and winters. If the earth is faced away from the sun then you will have much less light and colder temperatures.
Seasons Diagram
The seasons (left) change the length of days and night throughout the year. Because the northern hemisphere gets more light- longer days- during the summer because the earth is tilted towards the sun. But, during the winter because the northern hemisphere is tilted away from the sun, they get much less light and shorter days. This also happens in the southern hemisphere in the same way.