Final answer:
If the Earth's axis was tilted to 45° due to an asteroid impact, the seasons would become more extreme with colder winters and hotter summers.
Step-by-step explanation:
If the Earth was struck by an asteroid large enough to fill the Earth's axis from 23.4° to 45°, it would cause significant changes in the seasons. The Earth's axis is currently tilted at an angle of 23.4°, which is responsible for the seasons. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year, resulting in the changing seasons. If the axis was tilted to 45°, the seasons would be more extreme.
With a larger tilt, regions closer to the poles would experience longer and colder winters, while regions closer to the equator would have hotter and longer summers. The temperature differences between seasons would be more pronounced, with the winters being colder and the summers being hotter. This is because a larger tilt would cause sunlight to be distributed more unevenly, leading to more extreme temperature variations.
Learn more about Changes in seasons due to a significant tilt in the Earth's axis