Across
- 3. Earth's rigid outer layer
- 5. Layer between Earth's crust and core
- 9. Earth's outer layer that forms landmasses
- 12. Incline or slant
- 13. Outer layer, often of bread or pizza
- 14. Earth's outer layer beneath the oceans
- 15. Point in orbit closest to the Sun
Down
- 1. Autumn event when day and night are equal
- 2. Soft, flowing layer beneath Earth's lithosphere
- 4. Longest day of the year
- 6. Imaginary line dividing the Earth in half
- 7. Liquid layer beneath the mantle
- 8. Central part of the Earth
- 10. Path of a celestial body around a star
- 11. Strong metal used in construction
- 15. Slow change in the Earth's axis direction