Across
- 1. careful use and management of resources
- 6. any material from living things that can be used as an energy source
- 7. store electrical energy
- 9. reflects and focuses sunlight onto a fluid filled pipe, it becomes heated
- 10. energy stored in the nucleus of an atom
- 12. heat energy from inside the esrth that can be used to heat buildings and produce electricity
- 13. energy that travels as waves, through matter or through empty space
- 14. energy of moving air
- 15. energy of moving charges
- 17. the ability to make things move/change
- 18. an energy resource ghat formed over millions of years from reached remains of ancient plants and animals
- 19. a change from one form to another
- 20. either can be replaced as it is or cannot be used up
Down
- 2. energy from the sun
- 3. solar cell, can change light energy into electricity
- 4. used up much faster then it can be replaced
- 5. energy stored in the bonds that hold atoms together in molecules
- 8. the energy of moving particles
- 11. energy of moving objects
- 16. energy of moving water