Across
- 2. thinnest layer
- 4. thickest layer
- 7. how to get away from the earth
- 9. day 24 hours
- 12. solstice shortest day
- 13. Around the sun
Down
- 1. day 4 minutes
- 3. solstice longest day time
- 5. reason for seasons
- 6. equal day and night
- 7. imaginary line around the earth
- 8. FE
- 10. core all solid iron
- 11. equal day and night
