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Earth and Moon
| Term | Definition |
|---|---|
| cycle | repeated sequence of events |
| day | 24 hours |
| axis | line on which something rotates |
| Earth | 3rd planet from the Sun |
| First Quarter | right half visible |
| Full Moon | Fully visible |
| gravitational pull | force that pulls everything to Earth |
| Last Quarter | left half visible |
| moon phases | how the Moon looks from Earth for 30 days |
| night | Earth is facing away from the Sun |
| New Moon | Moon is not visible |
| rotate | spin |
| revolve | go around |
| tides | rise and fall of the ocean |