Across
- 2. made up of solid rock and is constantly moving
- 3. super continent that included all of the landmasses on Earth
- 5. are formed when magma forces its way through the cracks in the earth
- 6. it is solid metal and it is the hottest layer of the earth
- 9. keep the plates in motion as hot magma rises and sinks as it cools at the surface
- 10. large, moving piece of the Earth's crust
- 13. it is liquid metal and is around 4400 degrees Celsius
- 14. heat energy that comes from the core
- 15. a boundary when two plates move towards each other
- 16. boundary along which two tectonic plates scrape past each other
- 17. where the edges of two (or more) tectonic plates meet
- 18. molten rock found beneath the earth
Down
- 1. the theory that continents were once joined together but moved apart over time
- 4. melted material
- 7. a boundary when two plates move away from each other
- 8. an underwater mountain range where new ocean crust is formed
- 11. to explode; to break out with force
- 12. thickest layer of the earth and is made up of magma