Across
- 2. point between two objects where they balance each other
- 7. results in the apparent rising and setting of the Sun
- 8. commonly referred to as 'light'
- 10. eclipse in which the moon passes directly between the Sun and Earth
- 11. movement of the Earth around the Sun
- 13. wobbling around precessional axis; 18 year period
- 15. breaking up large nuclei into two or more nuclei
- 17. combining light nuclei to form larger nuclei; hyrdogen to helium
Down
- 1. change in direction of axis, without change in tilt
- 3. the plane in which Earth orbits about the Sun
- 4. theory in which there was a sudden expansion of matter and time
- 5. time it takes from one full moon to the next
- 6. converting solar energy into chemical energy
- 9. pathway a planet takes around the Sun (or any larger celestial body)
- 12. eclipse in which the moon passes through Earth's shadow
- 14. 23.5 degree tilt
- 16. these are a result of the 23.5 degree tilt of Earth's axis