Across
- 4. divided by the equator into northern and southern halves
- 7. thin crust that makes up the oceans floor
- 9. liquid layer composed of mostly iron and nickel
- 11. slow change in direction of earths rotational axis (earths wobble)
- 12. a thick, solid layer in between the crust and the core
- 13. the solid intermost layer
Down
- 1. a circulating electric current that surrounds earth
- 2. materials inside a planet separate based to density
- 3. a chemical that makes up most of the earth
- 5. the angle between an objects rotational and orbital axis
- 6. the path an object follows as it moves around another one
- 8. an objects spinning motion around its own axis
- 10. outermost layer of the earth
- 14. imaginary line around the middle of the earth