Across
- 4. Green rock found in the mantle
- 8. This layer is 3-40 miles thick
- 9. A device to measure the waves produced by earthquakes
- 10. A device that is sent somewhere far or dangerous to make discoveries
- 11. The outer core is made mainly of this (6,4)
Down
- 1. This layer accounts for 84% of the Earth's volume
- 2. This word describes the plates of the crust and their movement
- 3. Besides the heat, given as a reason why we cannot visit the centre of the Earth
- 5. This metallic element is also found in the core
- 6. The core of the Earth is as hot as the surface of this other object in the solar system
- 7. This word means 'of earthquakes'