Energy and its Uses & Energy Transfer Through Waves

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Across
  1. 4. energy which a moving object has
  2. 6. When a stretched spring is allowed to return its original length, its energy will be _______.
  3. 8. energy that is stored
  4. 11. distance between two successive crests of a wave
  5. 12. an important source of thermal energy
  6. 15. Energy cannot be created or __________.
  7. 16. light waves move in a direction _______ to its direction of vibration
  8. 17. power is ______ of energy conversion
  9. 19. SI unit of power
  10. 21. waves transfer energy through _________
  11. 22. an example of chemical potential energy
  12. 23. waves used to sterilise medical equipment
  13. 25. waves used in mobile phones
  14. 26. SI unit of frequency
Down
  1. 1. waves used in global positioning systems
  2. 2. waves used in remote control units
  3. 3. wind and solar energy are examples of ________ sources of energy
  4. 5. sound waves move in a direction _______ to its direction of vibration
  5. 7. oil and natural gas are examples of _______ fuels
  6. 9. Energy can only be _________ from one object to another.
  7. 10. the capacity to do work
  8. 13. Principle of _________ of Energy
  9. 14. This type of energy is gained after a flag is raised.
  10. 18. This type of potential energy is stored in a stretched bow
  11. 20. no transfer of energy occurs when there is no temperature ______.
  12. 24. SI unit of energy