Understanding Lunar Phases
The lunar cycle consists of various phases that the Moon goes through as it orbits the Earth. Each phase reflects the amount of sunlight that illuminates the Moon's surface as viewed from Earth.
Full Moon Phase
- The full Moon is the phase when the entire face of the Moon is illuminated by the Sun, making it appear bright and round.
- This occurs roughly 14 days after the new Moon.
Transition After Full Moon
- After the full Moon, the illuminated portion of the Moon begins to decrease.
- This transition marks the start of the waning phases.
Waning Phase Explained
- The term "waning" refers to the Moon decreasing in illumination.
- The first phase following the full Moon is the "Waning Gibbous," where a majority of the Moon's surface is still lit but gradually decreasing.
Why Option B is Correct
- The question specifically asks for the phase after the full Moon when the illumination begins to decrease.
- The correct answer is option 'B' - "Waning," as it signifies the transition from a full Moon towards the new Moon.
Other Lunar Phases
- New Moon: The Moon is not visible; no illumination.
- Waning Gibbous: Follows the full Moon; still mostly illuminated but decreasing.
- Waxing: Refers to the increasing illumination after a new Moon.
Understanding these phases helps in recognizing the Moon's behavior in the night sky, making it easier to appreciate its beauty and significance.