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