Across
- 3. adding carbon dioxide to the atmosphere(Pg12)
- 4. energy that is associated with motion(Pg5)
- 7. stored energy(Pg5)
- 9. a fan-like machine that generate electricity(Pg9)
- 10. partly decayed plant matter(Pg7)
- 13. is an element that is naturally radioactive(Pg15)
- 14. an electricity shortage(Pg6)
- 16. protects us from ultraviolet rays and can be harmful at ground level(Pg12)
- 17. a layer of earth that is made up of hot liquid magma(Pg31)
- 19. the waste product of an nuclear reaction(Pg18)
- 20. a renewable source that channels water to create energy for electricity(Pg28)
- 22. heat energy that is produced in the earth's hot liquid interior(Pg31)
- 23. what uranium atoms are in when split apart(Pg15)
- 25. the center of the earth(Pg31)
Down
- 1. an energy source that can't be used up(Pg13)
- 2. another name for crude oil(Pg9)
- 5. energy made by using sun(Pg22)
- 6. oil that is naturally found underground(Pg6)
- 8. energy made from wood,crops and waste(Pg33)
- 11. splitting an atom(Pg15)
- 12. spinning blades that catch wind and turn it into energy(Pg26)
- 15. the outer layer of the earth(Pg31)
- 18. energy that comes from limited sources(Pg7)
- 21. hot liquid rock(Pg31)
- 24. the basic unit of all substance(Pg14)