Across
- 5. heat waves
- 6. a form of energy that is associated with vibrations of matter.
- 9. changing the amount or direction
- 12. all matter is made up of tiny particles hold together by froces called bonds
- 14. machine that reduces the amount of force to lift an object
- 18. energy that is being stored
- 19. movement toward or attraction to something
- 23. pull and push that can change the motion of an object
- 24. blowing air can spin turbines to produce electricity
- 26. direct touch
- 27. energy which can be obtained from natural resources that can be constantly replenished.
- 28. measures energy
- 29. heat that produces electricity
- 30. living or recently living organisms we can use as energy resources
Down
- 1. moves of electrons
- 2. buried combustible deposits of organic material formed from decay plants and animals
- 3. through liquid and gasses
- 4. energy that is being used
- 7. made up of many simple machines
- 8. the vibration or movement of atoms and molecules
- 10. ramp
- 11. crow bar
- 13. force overcomes to lift an object
- 15. bike
- 16. conduction,convection,radiant
- 17. use the energy of flowing water as it moves downstream
- 20. a natural resource cannot be replaced once consumed
- 21. axe
- 22. clean energy source that produces little waste
- 25. the movement of a substance from one plate to another