Here's how it works:
* Earth's Tilt: The Earth is tilted on its axis at approximately 23.5 degrees. This tilt is the main reason we have seasons.
* Autumn in the Northern Hemisphere: During autumn in the Northern Hemisphere, the Northern Hemisphere is tilted slightly away from the sun. This means the sun's rays hit the Northern Hemisphere at a more oblique angle.
* Oblique Angle: When the sun's rays hit at a more oblique angle, they are spread out over a larger area. This means each spot on Earth receives less direct sunlight and less heat.
* Shorter Days: The oblique angle also leads to shorter days and longer nights in the Northern Hemisphere. This is because the sun rises later and sets earlier.
* Cooler Temperatures: The combination of less direct sunlight and shorter days results in cooler temperatures as we transition from summer to winter.
Important Note: While the Earth's tilt causes the seasons, the Northern Hemisphere experiences autumn when the Southern Hemisphere experiences spring. This is because the Earth's tilt means the Southern Hemisphere is tilted towards the sun at this time.
