Earth

2. Path on which a planet moves around the sun/star, or a moon moves around a planet
3. Shprt term conditions of the atmosphere
4. One complete orbit around the sun
7. The system made up of the sun and all planets
8. The phases where the moon is less than half illuminated
10. Summer, Spring, Winter and Autumn
12. When an object spins or turns on its own axis
13. When the moon is in the earths shadow and appears darkened
15. The long term average weather conditions

1. When the sun is blocked by the moon
5. The point where the sun appears to reach its LOWEST point in the sky for the year
6. Changes of the appearance of the shape of the moon as seen from earth
7. The point where then sun appears to reach its HIGHEST point in the sky for the year
9. Day on which night and day are the same length
11. Phases where the moon is more than half illuminated
14. An imaginary straight line joining the north and south poles