Multiple choice

The term 'syzygy' as referred to when the

  1. Earth is at perihelion and moon at perigee

  2. Earth is at aphelion and moon at apogee

  3. Moon and sun are at right angles with reference to the earth

  4. Moon, sun and the earth lie along a straight line

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Syzygy is an astronomical term referring to the alignment of three celestial bodies in a straight line. In the context of Earth-Sun-Moon system, it occurs during new moon (Sun-Moon-Earth aligned) and full moon (Sun-Earth-Moon aligned). Option D correctly describes this linear arrangement.