Across
- 2. the natural movement of the air in currents
- 3. the total mass of organisms in a given area
- 6. energy in which something is in motion
- 7. produced by the internal heat of the earth
- 8. bright or shining light
- 10. relating to heat
- 12. relating to chemistry and chemicals
- 14. when something has the potential to move
- 15. related to or determined by the sun's rays
Down
- 1. flowing water used to create electricity
- 4. working or produced by machines
- 5. dark liquid from petroleum
- 9. a form of energy resulting from charging
- 11. relating to the nucleus of an atom
- 13. a black rock found underground