Across
- 4. furthest sphere from earth
- 6. fossil fuel used to make power when burned
- 9. protective layer around the earth
- 10. consists of the crust and upper mantle
- 11. cars run of it
- 12. what the atmosphere is made off
Down
- 1. second closest sphere to earth
- 2. closest sphere to earth
- 3. third closest sphere to earth
- 5. consists of water
- 7. created by burning fossil fuels
- 8. nuclear weapons create this