Across
- 4. the imaginary line that runs through the earth from the north to south pole
- 6. a progressively larger part of its visible surface illuminated
- 7. (of the moon) having the illuminated part greater than a semicircle and less than a circle.
- 8. eclipse an eclipse in which the sun is obscured by the moon
- 9. an eclipse in which the moon appears darkened as it passes into the earth's shadow
- 13. this causes the seasons and is approximately 23.5 degrees
- 14. the curved sickle shape of the waxing or waning moon
- 15. each of the twelve named periods into which a year is divided
Down
- 1. the phase of the moon in which its whole disc is illuminated
- 2. the phase of the moon when only half its illuminated surface is visible from the earth
- 3. a two-dimensional plane which we call the ecliptic
- 5. the star round which the earth orbits
- 6. a progressively smaller part of its visible surface illuminated
- 8. example, summer, autumn winter, spring
- 10. the time at which the moon is in conjunction with the sun, when it is not visible from the earth
- 11. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass
- 12. the curved path of a celestial object or spacecraft round a star, planet, or moon