| A | B |
|---|
| rotation | the Earth's spinning motion |
| axis | The imaginary line that runs through the center of the Earth (north to south). |
| revolving | When the Earth moves around the Sun, we say it is doing this. |
| orbit | The moon travels around the Earth along its own path. This path is known as an .... |
| constellation | nighttime star pattern |
| phases | monthly changes in the moon's shape |
| tides | This rising and falling of ocean water is caused by the gravity of the moon. |
| equator | the imaginary line that circles Earth halfway between the two poles |
| seasons | the four parts of the year |
| waxing | growing larger |
| waning | growing smaller |
| gibbous | more than half of the moon |
| crescent | less than half of the moon |
| appears | looks like it, but may not really be true |
