Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ...

Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s axis causes the Northern Hemisphere to receive more intense sunlight and have longer days in summer than in winter.


D Spring equinox (March). Sun’s direct rays fall on equator; length of day equals that of night. A Summer solstice (June). Northern Hemisphere is most tilted toward sun; has its longest day. \iflnter solstice (December). Northern B Autumn equinox (September). Hemisphere is most Sun’s direct rays fall on equator; tilted away from sun; length of day equals that of night. has its shortest day.