Energy and its Uses & Energy Transfer Through Waves

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