Across
- 5. partially molten layer, allows tectonic plates to move
- 6. Earth's point farthest from the Sun
- 8. middle layer, rigid due to pressure
- 9. 24 hour period, spinning of Earth around its axis
- 11. constructed a pendulum that gave evidence to Earth's rotation
- 13. A apparent shift in position of near by stars when compared to distance stars
- 14. maximum tilt toward the sun
- 15. rotating cloud of gas and dust contracted to for the Sun and Planets
- 16. daytime and nighttime are equal in length all over the world
Down
- 1. created when charged particles from space cascade down through the Earth’s atmosphere
- 2. Rigid layer divided into continental and oceanic
- 3. Process where gas or liquid is heated, expands and rises
- 4. Earth is divided into 24 worldwide, each at 15 degrees
- 7. A traveler crossing this line either gains or loses a day
- 10. molten iron layer that creates magnetic field
- 12. causes a compass needle points northward
- 13. Earth's nearest point to the Sun