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Ocean Tides
| Term | Definition |
|---|---|
| First Quarter Moon | When the right half of the Moon is illuminated and the lunar cycle is in the waxing phase |
| Full Moon | The lunar phase when Earth is between the Sun and Moon and all of the illuminated portion is seen from Earth |
| Third Quarter Moon | When the left half of the Moon is illuminated and the lunar cycle is in the waning phase |
| Neap Tide | Tide with the smallest daily tidal range; occurs when the Sun, Earth, and the Moon form a 90-degree angle |
| New Moon | The lunar phase when the Moon is between the Sun and Earth and none of the illuminated portion is seen from Earth |
| Spring Tide | Tide with the largest daily tidal range, which occurs when the Sun, Earth, and the Moon line up with each other |
| Tide | The rise and fall of sea levels caused by the gravitational attraction of the Moon and the Sun |