Question

What would have been the pattern of day and night and seasons if the Earth’s axis had been vertical instead of being tilted?

Answer 1

If the Earth’s axis had been vertical instead of being tilted, the pattern of day and night would have been uniform everywhere, with equal lengths of day and night throughout the year. There would be no variation in day length by latitude or season. Consequently, the seasons as we know them would not occur because the Sun’s rays would be directly overhead at the equator consistently without shifting north or south. This would result in a lack of seasonal temperature changes, leading to a more constant climate year-round across the globe.