Across
- 4. closest star to Earth
- 5. the color of the hottest stars
- 7. two plates move away from each other
- 11. molten rock beneath the Earth’s surface
- 12. the birthplace of most stars
- 13. tectonic plates collide
- 14. one large landmass
- 15. the fault that runs though California
- 16. the force that holds galaxies together
- 17. large moving pieces of Earth
Down
- 1. the planet with the most moons
- 2. proposed the idea called continental drift
- 3. one tectonic plate is pulled beneath another plate
- 6. the rigid solid layer of Earth made of rock
- 8. tectonic plates move past one another in opposite directions
- 9. the actual brightness of a star
- 10. the bending, tilting, and breaking of rock
- 18. a body composed of gas that emits light