4. Explain what happens during the spring equinox and fall equinos. Your answer

During the spring equinox and fall equinox, the Earth's axis is not tilted towards or away from the Sun. This results in nearly equal amounts of daylight and darkness. The spring equinox, which occurs around March 20th, marks the beginning of spring in the Northern Hemisphere and fall in the Southern Hemisphere. The fall equinox, which occurs around September 22nd, marks the beginning of fall in the Northern Hemisphere and spring in the Southern Hemisphere.