🌕 Moon Phases
This quiz explores the lunar cycle and the Moon's apparent changes in shape as seen from Earth. You'll discover why the Moon appears to change phases, learn the names of each phase, and understand the timing of the ~29.5-day synodic period that controls the Moon's cycle. **What you'll learn:** - Why the Moon appears to change shape (lunar phases) - The eight major Moon phases and their characteristics - How the relative positions of Earth, Moon, and Sun create phases - The synodic period and why it's about 29.5 days - How to predict Moon phases based on the lunar cycle
Questions in this quiz
Answers hidden — play to find out.
- Question 1
Why does the Moon appear to change shape during its cycle?
- Question 2
True or false: A new moon occurs when Earth is positioned between the Sun and the Moon.
- Question 3
Which Moon phase occurs when the Moon is positioned directly opposite the Sun, with Earth between them?
- Question 4
What does the term 'waxing' mean when describing a Moon phase?
- Question 5
True or false: The synodic period (lunar cycle) is approximately 29.5 days.
- Question 6
A first quarter moon is visible primarily at which time of day?
- Question 7
What is the correct order of the Moon phases in the lunar cycle, starting from a new moon?
- Question 8
True or false: During a waning crescent phase, the Moon is visible in the eastern sky just before sunrise.
- Question 9
Why does the Moon take approximately 29.5 days to complete one full cycle of phases?
- Question 10
At a last quarter phase, approximately how much of the Moon's sunlit side is visible from Earth?
- Question 11
True or false: A waxing gibbous Moon is visible for almost the entire night.
- Question 12
Which statement best explains why we always see the same side of the Moon from Earth?
- Question 13
If today is a full moon, approximately how many days will pass before the next first quarter phase occurs?
- Question 14
True or false: Lunar eclipses can only occur during a full moon phase.
- Question 15
What causes the Moon to appear larger and more orange-colored near the horizon than high in the sky?
- Question 16
During a waxing crescent phase, where is the Sun located relative to the Moon as viewed from Earth?