| A | B |
|---|
| Orbit | When something circles something else. |
| Rotate | To spin or turn around. |
| Tilt | To lean. |
| Axis | The imaginary line that runs through the center of the Earth. |
| Gravity | The attractive force between objects and the Earth. |
| Waxing | Getting bigger. |
| Waning | Getting smaller. |
| Solar Eclipse | When the moon moves between the sun and the Earth, blocking the sun. |
| Lunar Eclipse | When the moon moves into the shadow of the Earth and becomes dark. |
| Phases | The changes in the way the moon looks over a month. |
