Energy sources

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Across
  1. 4. thick black liquid
  2. 6. nonrenewable and forms within the earth over millions of year
  3. 8. energy made from flowing water
  4. 9. wind solar geothermal hydroelectric tidal biomass
  5. 13. energy from the sun
  6. 15. energy from any material that comes from plants
  7. 16. naturally renew or replenish themselves
  8. 17. to use something again
  9. 18. generated during nuclear fission
  10. 19. produced by the natural rise and fall of tides
Down
  1. 1. fossil fuels coal oil natural gas fracking and nuclear
  2. 2. mineral formed from plants that have been fossilized
  3. 3. captured with wind turbines
  4. 5. DO NOT naturally renew or replenish themselves
  5. 7. to make it like new
  6. 10. layer in earths stratosphere which absorbs most of ultraviolet radiation
  7. 11. careful maintenance and upkeep of a natural resource
  8. 12. heat energy from deep within the earth
  9. 14. a gas that contributes to greenhouse gases by effect by absorbing carbon dioxide
  10. 17. to convert waste into reusable material