Across
- 3. planet without moon
- 4. cloud of gas and dust in space
- 7. number of planets
- 8. discontinuity between mantle and core
- 10. force responsible for flattening at poles
- 12. planet-like objects
- 14. largest planet
Down
- 1. period when night and day length are equal
- 2. daily atmospheric conditions
- 3. natural satellite
- 5. eclipse caused by revolution of the earth
- 6. lithosphere
- 9. planet on which we live
- 11. earth spins on this of its own
- 13. layer of magnesium and silica