| A | B |
|---|
| longest & shortest days of the year | solstices |
| 12 hours of day & 12 hours of night | equinoxes |
| 1st day of spring | vernal equinox |
| 1st day of fall | autumnal equinox |
| shortest day in Northern Hemisphere | winter solstice |
| longest day in Northern Hemisphere | summer solstice |
| revolve | one body orbits around another |
| rotate | an object spining on its axis |
| caused by the tilt of Earth's axis and its revolution around the sun | seasons |
| fall and spring | neither hemisphere tilted in towards sun |
| winter solstice | December |
| vernal equinox | March |
| solstices | 2 days when Earth's axis points towards/away from the sun |
| makes day and night | Earth's rotation |
| shape of Earth's orbit | ellipse |
| angle of the tilt of Earth's axis | 23.5 degrees |
| causes the seasons | tilt of Earth's axis |
| length of Earth's revolution | 365 1/4 days |
| length of Earth's rotation | 24 hours |
| summer solstice | June |
| autumnal equinox | September |
