Energy and its Uses & Energy Transfer Through Waves

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