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Phases of the Moon - Quiz
Contributed by: Booker
  • 1. Phases of the moon

    How long does it take for the Moon to complete one full cycle of phases (from New Moon to New Moon)?
A) 21 days
B) 29.5 days
C) 18 days
D) 365 days
E) 7 days
  • 2. Which phase occurs when the Moon is positioned between the Earth and the Sun?
A) New Moon
B) Full Moon
C) Third Quarter
D) First Quarter
  • 3. When the visible part of the Moon is increasing in size, it is said to be:
A) Waning
B) Eclipsing
C) Gibbous
D) Waxing
  • 4. What do we call the phase where exactly half of the right side of the Moon is illuminated?
A) Waxing Gibbous
B) First Quarter
C) New Moon
D) Third Quarter
  • 5. Which of the following is the correct order of phases?
A) New Moon → First Quarter → Full Moon → Third Quarter
B) New Moon → Waxing Crescent → Waning Crescent → Full Moon
C) ew Moon → Full Moon → First Quarter → Third Quarter
D) Full Moon → New Moon → Third Quarter → First Quarter
  • 6. A "Gibbous" moon is one where:
A) Less than half is illuminated
B) The moon is completely dark
C) More than half but less than full is illuminated
D) The moon is not visible because of clouds
E) Many stars are visible near the moon
  • 7. When the Moon is "Waning," the illuminated portion is:
A) Becoming more bright
B) Becoming smaller
C) Turning red
D) Becoming larger
  • 8. Which phase follows the Waxing Gibbous?
A) Waxing Crescent
B) Full Moon
C) Third Quarter
D) New Moon
  • 9. What causes the phases of the Moon?
A) Clouds blocking the Moon
B) The shadow of the Earth falling on the Moon
C) The Moon spinning on its axis faster than the Earth
D) The Moon’s revolution around the Earth and the angle of sunlight
  • 10. How much of the total Moon's surface is always illuminated by the Sun (except during an eclipse)?
A) 50%
B) 75%
C) 25%
D) 100%
  • 11. A "Crescent" moon is defined as:
A) A moon that only appears during the day
B) A moon that is not visible at all
C) A moon that is less than half illuminated
D) A moon that is almost full
  • 12. If you see a Third (Last) Quarter moon today, about how long will it be until the New Moon?
A) One day
B) Two weeks
C) Two months
D) About one week
E) One month
  • 13. During a Full Moon, where is the Earth located?
A) Between the Sun and the Moon
B) Inside the Moon’s shadow
C) To the side of the Sun and Moon
D) Behind the Moon
  • 14. What is the name of the phase that occurs between the Full Moon and the Third Quarter?
A) Waxing Gibbous
B) Waxing Crescent
C) Waning Gibbous
D) Waning Crescent
  • 15. Which phase rises at roughly midnight and sets at roughly noon?
A) New Moon
B) Third Quarter
C) Full Moon
D) First Quarter
  • 16. Why do we always see the same side of the Moon from Earth?
A) The Earth does not rotate
B) The Sun's gravity holds one side in place
C) The Moon does not rotate
D) The Moon's rotation period matches its revolution period (Synchronous Rotation)
  • 17. What do we call the "horns" or points of a crescent moon?
A) Peaks
B) Talons
C) Cusps
D) Rays
  • 18. A "Blue Moon" is most commonly defined as:
A) The first New Moon of the year
B) The second Full Moon in a single calendar month
C) A moon that happens during a solar eclipse
D) A moon that actually turns blue due to dust
  • 19. What is the term for the line that separates the dark side and the light side of the Moon?
A) The Equator
B) The Terminator
C) The Horizon
D) The Eclipse Line
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