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SMP Inv. 2
Sun, Moon, and Planets - Investigation 2
| Term | Definition |
|---|---|
| Crescent Moon | the curved shape of the visible part of the Moon just before and after a new Moon |
| First-Quarter Moon | a phase of the Moon in the lunar cycle halfway between a new Moon and a full Moon |
| Full Moon | the phase of the Moon when all of the sunlit side of the Moon is visible from Earth |
| Gibbous Moon | the shape of the Moon when it appears to be more than a quarter but not yet full and when it is less than full but not quite a third quarter |
| Lunar Cycle | the 4-week period during which the Moon orbits Earth one time and goes through all of its phases |
| Moon | Earth’s natural satellite |
| New Moon | the phase of the Moon when the sunlit side of the Moon is not visible from Earth |
| Night Sky | the time when the sky is dark and certain astronomical objects can be observed, such as the Moon, stars, and planets |
| Phase | the shape of the visible part of the Moon |
| Star | a huge sphere of hydrogen and helium gas that radiates heat and light |
| Third-Quarter Moon | a phase of the Moon in the lunar cycle halfway between the full Moon and the new Moon |
| Waning Moon | getting smaller |
| Waxing Moon | getting larger |