| A | B |
|---|
| Rotation | the spinning motion of an object in space around its own axis |
| Day | when the Earth faces the Sun |
| Night | when the Earth faces away from the Sun |
| Earth's Rotation | 24 hours |
| Revolution | the motion of an object in space around the Sun |
| Summer | the season when the Earth tilts toward the Sun |
| Winter | the season when the Earth tilts away from the Sun |
| Earth's Revolution | about 365 days |
| Axis | an imaginary shaft or pole around which an object rotates, or spins |
| Orbit | the path that one object in space travels as it moves around the Sun |
| Morning Shadow | the shadow points to the west since the Sun is in the east |
| Noon Shadow | the shadow is short because the Sun is above us |
| Afternoon Shadow | the shadow points east because the Sun is in the West |
| Seasons | caused by the Earth's orbit around and tilt towards the Sun |
| Earth's Axis | the tilt of the Earth towards the Sun |
| Equator | the imaginary line that divides the Earth into Northern and Southern Hemisphere |
