Across
- 4. The layer of the Earth made up of solid iron and nickel.
- 7. A type of rock formed from cooling lava.
- 8. The thickest layer of the Earth.
- 9. The layer of the Earth made up of liquid iron and nickel.
- 10. A source of electricity that is not used up and can be replenished.
Down
- 1. A type of rock formed by heat and pressure underground.
- 2. Name given to coal, oil and gas.
- 3. A type of rock formed from the build up of smaller particles.
- 5. A source of electricity that is used up and can not be replenished.
- 6. The outer part of the Earth.